message: Add tstring_fuzz.cc to build
diff: @@ -70,3 +70,11 @@ tf_fuzz_target(
  "//tensorflow/core/platform:stringprintf",
  ],
  )
  +
  +tf_fuzz_target(
  + name = "tstring_fuzz",
  + srcs = ["tstring_fuzz.cc"],
  + deps = [
  + "//tensorflow/core/platform:tstring",
  + ],
  +)
  