[clang] [clang][Sema] Combine fallout warnings to just one warning (PR #127546)

[via cfe-commits]

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@@ -696,47 +665,41 @@ static void CheckFallThroughForBody(Sema &S, const Decl *D, const Stmt *Body,
   if (CD.checkDiagnostics(Diags, ReturnsVoid, HasNoReturn))
       return;
   SourceLocation LBrace = Body->getBeginLoc(), RBrace = Body->getEndLoc();
-  auto EmitDiag = [&](SourceLocation Loc, unsigned DiagID) {
-    if (IsCoroutine)
-      S.Diag(Loc, DiagID) << FSI->CoroutinePromise->getType();
-    else
-      S.Diag(Loc, DiagID);
-  };
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Sirraide wrote:

Actually, we weren’t even doing anything with the promise type were we? Oh well, just get rid of it then (i.e. leave your changes here as-is); I don’t think we care too much about that.

https://github.com/llvm/llvm-project/pull/127546