We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
VS 2017 backend emits bad WindowsTargetPlatformVersion value
When I tried generating a VS 2017 solution, the generated app.vcxproj contained this:

```
<WindowsTargetPlatformVersion>10.0.14393.0\</WindowsTargetPlatformVersion>
```

Which then causes errors in other `.targets` files attempting to do a numeric comparison against that.
This value is probably taken straight from one of these environment variables:

```
WindowsSDKLibVersion=10.0.14393.0\
WindowsSDKVersion=10.0.14393.0\
```

The trailing backslash is a bit suspect, but may be there intentionally so it can be concatenated to 
```
WindowsSdkDir=C:\Program Files (x86)\Windows Kits\10\
```
directly.

--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `mesonbuild/backend/vs2017backend.py`
Content:
```
1 # Copyright 2014-2016 The Meson development team
2 
3 # Licensed under the Apache License, Version 2.0 (the "License");
4 # you may not use this file except in compliance with the License.
5 # You may obtain a copy of the License at
6 
7 #     http://www.apache.org/licenses/LICENSE-2.0
8 
9 # Unless required by applicable law or agreed to in writing, software
10 # distributed under the License is distributed on an "AS IS" BASIS,
11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 # See the License for the specific language governing permissions and
13 # limitations under the License.
14 
15 import os
16 
17 from .vs2010backend import Vs2010Backend
18 
19 
20 class Vs2017Backend(Vs2010Backend):
21     def __init__(self, build):
22         super().__init__(build)
23         self.name = 'vs2017'
24         self.platform_toolset = 'v141'
25         self.vs_version = '2017'
26         # WindowsSDKVersion should be set by command prompt.
27         self.windows_target_platform_version = os.getenv('WindowsSDKVersion', None)
28
```
--- END FILES ---

Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.

Here is an example:

```diff
diff --git a/examples/server_async.py b/examples/server_async.py
--- a/examples/server_async.py
+++ b/examples/server_async.py
@@ -313,4 +313,4 @@
 
 
 if __name__ == "__main__":
-    asyncio.run(run_async_server("."), debug=True)
+    asyncio.run(run_async_server(), debug=True)
diff --git a/examples/server_sync.py b/examples/server_sync.py
--- a/examples/server_sync.py
+++ b/examples/server_sync.py
@@ -313,5 +313,5 @@
 
 
 if __name__ == "__main__":
-    server = run_sync_server(".")
+    server = run_sync_server()
     server.shutdown()

```

diff --git a/mesonbuild/backend/vs2017backend.py b/mesonbuild/backend/vs2017backend.py
--- a/mesonbuild/backend/vs2017backend.py
+++ b/mesonbuild/backend/vs2017backend.py
@@ -24,4 +24,4 @@
         self.platform_toolset = 'v141'
         self.vs_version = '2017'
         # WindowsSDKVersion should be set by command prompt.
-        self.windows_target_platform_version = os.getenv('WindowsSDKVersion', None)
+        self.windows_target_platform_version = os.getenv('WindowsSDKVersion', None).rstrip('\\')

{"golden_diff": "diff --git a/mesonbuild/backend/vs2017backend.py b/mesonbuild/backend/vs2017backend.py\n--- a/mesonbuild/backend/vs2017backend.py\n+++ b/mesonbuild/backend/vs2017backend.py\n@@ -24,4 +24,4 @@\n         self.platform_toolset = 'v141'\n         self.vs_version = '2017'\n         # WindowsSDKVersion should be set by command prompt.\n-        self.windows_target_platform_version = os.getenv('WindowsSDKVersion', None)\n+        self.windows_target_platform_version = os.getenv('WindowsSDKVersion', None).rstrip('\\\\')\n", "issue": "VS 2017 backend emits bad WindowsTargetPlatformVersion value\nWhen I tried generating a VS 2017 solution, the generated app.vcxproj contained this:\r\n\r\n```\r\n<WindowsTargetPlatformVersion>10.0.14393.0\\</WindowsTargetPlatformVersion>\r\n```\r\n\r\nWhich then causes errors in other `.targets` files attempting to do a numeric comparison against that.\r\nThis value is probably taken straight from one of these environment variables:\r\n\r\n```\r\nWindowsSDKLibVersion=10.0.14393.0\\\r\nWindowsSDKVersion=10.0.14393.0\\\r\n```\r\n\r\nThe trailing backslash is a bit suspect, but may be there intentionally so it can be concatenated to \r\n```\r\nWindowsSdkDir=C:\\Program Files (x86)\\Windows Kits\\10\\\r\n```\r\ndirectly.\n", "before_files": [{"content": "# Copyright 2014-2016 The Meson development team\n\n# Licensed under the Apache License, Version 2.0 (the \"License\");\n# you may not use this file except in compliance with the License.\n# You may obtain a copy of the License at\n\n#     http://www.apache.org/licenses/LICENSE-2.0\n\n# Unless required by applicable law or agreed to in writing, software\n# distributed under the License is distributed on an \"AS IS\" BASIS,\n# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n# See the License for the specific language governing permissions and\n# limitations under the License.\n\nimport os\n\nfrom .vs2010backend import Vs2010Backend\n\n\nclass Vs2017Backend(Vs2010Backend):\n    def __init__(self, build):\n        super().__init__(build)\n        self.name = 'vs2017'\n        self.platform_toolset = 'v141'\n        self.vs_version = '2017'\n        # WindowsSDKVersion should be set by command prompt.\n        self.windows_target_platform_version = os.getenv('WindowsSDKVersion', None)\n", "path": "mesonbuild/backend/vs2017backend.py"}], "after_files": [{"content": "# Copyright 2014-2016 The Meson development team\n\n# Licensed under the Apache License, Version 2.0 (the \"License\");\n# you may not use this file except in compliance with the License.\n# You may obtain a copy of the License at\n\n#     http://www.apache.org/licenses/LICENSE-2.0\n\n# Unless required by applicable law or agreed to in writing, software\n# distributed under the License is distributed on an \"AS IS\" BASIS,\n# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n# See the License for the specific language governing permissions and\n# limitations under the License.\n\nimport os\n\nfrom .vs2010backend import Vs2010Backend\n\n\nclass Vs2017Backend(Vs2010Backend):\n    def __init__(self, build):\n        super().__init__(build)\n        self.name = 'vs2017'\n        self.platform_toolset = 'v141'\n        self.vs_version = '2017'\n        # WindowsSDKVersion should be set by command prompt.\n        self.windows_target_platform_version = os.getenv('WindowsSDKVersion', None).rstrip('\\\\')\n", "path": "mesonbuild/backend/vs2017backend.py"}]}