Follow-up on the test of r157892

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@157893 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Index/create-tu-fail.c b/test/Index/create-tu-fail.c
index 3241e14..f259cca 100644
--- a/test/Index/create-tu-fail.c
+++ b/test/Index/create-tu-fail.c
@@ -1,4 +1,4 @@
-// RUN: rm %t.c
+// RUN: rm -f %t.c
 // RUN: touch %t.c
 // RUN: c-index-test -write-pch %t.pch %t.c
 // RUN: cp %s %t.c