[clang] [Clang] Check for uninitialized use in lambda within CXXOperatorCallExpr (PR #129198)

[Shafik Yaghmour via cfe-commits]

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@@ -12796,6 +12799,7 @@ namespace {
     }
 
     void VisitCXXOperatorCallExpr(CXXOperatorCallExpr *E) {
+      llvm::SaveAndRestore CxxOpCallScope(isInCXXOperatorCall, true);
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shafik wrote:

We should be using [bugprone-argument-comment](https://clang.llvm.org/extra/clang-tidy/checks/bugprone/argument-comment.html) style for all literal arguments like this.

https://github.com/llvm/llvm-project/pull/129198