Update ReduceValuesToReturn.cpp

Author: arsenm

llvm/tools/llvm-reduce/deltas/ReduceValuesToReturn.cpp

@@ -59,7 +59,7 @@ static void rewriteFuncWithReturnType(Function &OldF, Value *NewRetValue) {
 
   Type *OldRetTy = OldFuncTy->getReturnType();
 
-  // Hack up any return values in other blocks, we can't leave them as ret void.
+  // Hack up any return values in other blocks, we can't leave them as returning OldRetTy.
   if (OldRetTy != NewRetTy) {
     for (BasicBlock &OtherRetBB : OldF) {
       if (&OtherRetBB != NewRetBlock) {