Fix a release build warning.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@76985 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGExprConstant.cpp b/lib/CodeGen/CGExprConstant.cpp
index 648dbde..34b67c8 100644
--- a/lib/CodeGen/CGExprConstant.cpp
+++ b/lib/CodeGen/CGExprConstant.cpp
@@ -167,7 +167,7 @@
 
     assert(Builder.NextFieldOffsetInBytes == Builder.getSizeInBytes(Result));
 
-    return 0;
+    return Result;
   }
 };