[clang-tools-extra] [clang-tidy] fix incorrect hint for InitListExpr in prefer-member-initializer (PR #81560)

[Julian Schmidt via cfe-commits]

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@@ -203,6 +203,7 @@ void PreferMemberInitializerCheck::check(
     SourceLocation InsertPos;
     SourceRange ReplaceRange;
     bool AddComma = false;
+    bool AddBracket = false;
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5chmidti wrote:

Brackets are `[]`, use brace (`{}`).

https://github.com/llvm/llvm-project/pull/81560