Minor test twik.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@45208 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Sema/protocol-rewrite-1.m b/test/Sema/protocol-rewrite-1.m
index a9df2ec..e47a8f6 100644
--- a/test/Sema/protocol-rewrite-1.m
+++ b/test/Sema/protocol-rewrite-1.m
@@ -1,4 +1,4 @@
-// RUN: clang -rewrite-test %s
+// RUN: clang -rewrite-test %s | clang
 
 typedef struct MyWidget {
   int a;