[Sema] Do not consider warning fixes for non-augmenting fix recording logic

Author: LucianoPAlmeida

lib/Sema/CSSimplify.cpp

@@ -11661,9 +11661,16 @@ bool ConstraintSystem::recordFix(ConstraintFix *fix, unsigned impact) {
   // current anchor or, in case of anchor being an expression, any of
   // its sub-expressions.
   llvm::SmallDenseSet<ASTNode> anchors;
-  for (const auto *fix : Fixes)
-    anchors.insert(fix->getAnchor());
+  for (const auto *fix : Fixes) {
+    // Warning fixes shouldn't be considered, because even if
+    // such fix is recorded at that anchor this should not
+    // have any affect in the recording of any other fix.
+    if (fix->isWarning())
+      continue;
 
+    anchors.insert(fix->getAnchor());
+  }
+  
   bool found = false;
   if (auto *expr = getAsExpr(anchor)) {
     forEachExpr(expr, [&](Expr *subExpr) -> Expr * {