[clang-tools-extra] [clang] [llvm] [clang] Fix false positive -Wmissing-field-initializer for anonymous unions (PR #70829)

[Mariya Podchishchaeva via cfe-commits]

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@@ -2537,19 +2555,13 @@ class FieldInitializerValidatorCCC final : public CorrectionCandidateCallback {
 /// actually be initialized.
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Fznamznon wrote:

I removed addition of `InitializedFields` parameter, so probably it makes sense to update the comment comment in a separate patch.

https://github.com/llvm/llvm-project/pull/70829