[clang-tools-extra] [clang-tidy] Skip ObjC fast-enum loop vars in init-variables (PR #173448)

[Baranov Victor via cfe-commits]

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@@ -463,6 +463,10 @@ Changes in existing checks
   <clang-tidy/checks/cppcoreguidelines/init-variables>` check by fixing the
   insertion location for function pointers with multiple parameters.
 
+- Improved :doc:`cppcoreguidelines-init-variables
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vbvictor wrote:

We should probably make the error message more straightforward on what to do.
Like "merge those entries into one.." (my wording is bad)

https://github.com/llvm/llvm-project/pull/173448