message: Implement a better way of not passing the sanitizer environment on to tests.
  rdar://problem/48889580
diff: @@ -1875,9 +1875,8 @@ class TestBase(Base):
  self.runCmd('settings set symbols.enable-external-lookup false')
  # Make sure that a sanitizer LLDB's environment doesn't get passed on.
  - if (('DYLD_INSERT_LIBRARIES' in os.environ) and
  - 'libclang_rt.asan' in os.environ['DYLD_INSERT_LIBRARIES']):
  - self.runCmd('settings set target.env-vars DYLD_INSERT_LIBRARIES=')
  + if 'DYLD_LIBRARY_PATH' in os.environ:
  + self.runCmd('settings set target.env-vars DYLD_LIBRARY_PATH=')
  if "LLDB_MAX_LAUNCH_COUNT" in os.environ:
  self.maxLaunchCount = int(os.environ["LLDB_MAX_LAUNCH_COUNT"])
  