fix bogus run line.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@54940 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Misc/diag-checker.c b/test/Misc/diag-checker.c
index c988ccb..e586446 100644
--- a/test/Misc/diag-checker.c
+++ b/test/Misc/diag-checker.c
@@ -1,4 +1,4 @@
-// RUN: clang -parse-ast -verify %s
+// RUN: clang -fsyntax-only -verify %s
 
 #include <stdio.h>