[clang] [Clang][Sema]:Fix musttail attribute on a function with not_tail_called attribute has no warning/error (PR #134465)

[Aaron Ballman via cfe-commits]

================
@@ -717,6 +717,12 @@ bool Sema::checkMustTailAttr(const Stmt *St, const Attr 
&MTA) {
     return false;
   }
 
+  if (const FunctionDecl *CalleeDecl = CE->getDirectCallee();
+      CalleeDecl && CalleeDecl->hasAttr<NotTailCalledAttr>()) {
+    Diag(St->getBeginLoc(), diag::err_musttail_mismatch) << &MTA;
----------------
AaronBallman wrote:

This should not be passing `&MTA` as that's naming the attribute. It should be 
passing `CalleeDecl` instead.

https://github.com/llvm/llvm-project/pull/134465
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