[clang-tools-extra] [clang-tidy] Return error code on config parse error (PR #136167)

[Carlos Galvez via cfe-commits]

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@@ -337,8 +337,7 @@ Allow empty enabled checks. This suppresses
 the "no checks enabled" error when disabling
 all of the checks.
 )"),
-                                         cl::init(false),
-                                         cl::cat(ClangTidyCategory));
+                                   cl::init(false), cl::cat(ClangTidyCategory));
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carlosgalvezp wrote:

This formatting change seems unrelated, please revert

https://github.com/llvm/llvm-project/pull/136167