Use existing -fcatch-undefined-behavior option,
replacing -freset-local-blocks. // rdar://9227352


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@134082 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGBlocks.cpp b/lib/CodeGen/CGBlocks.cpp
index 20b5c9b..3488f2e 100644
--- a/lib/CodeGen/CGBlocks.cpp
+++ b/lib/CodeGen/CGBlocks.cpp
@@ -665,7 +665,7 @@
   llvm::Value *result =
     Builder.CreateBitCast(blockAddr,
                           ConvertType(blockInfo.getBlockExpr()->getType()));
-  if (getLangOptions().ResetLocalBlocks)
+  if (getLangOptions().CatchUndefined)
     EHStack.pushCleanup<CallMemsetLocalBlockObject>(NormalCleanup, blockAddr, 
                                                     blockInfo.BlockSize);