Add -o /dev/null to some tests which don't care about their output.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102722 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/FrontendC/2009-01-21-InvalidIterator.c b/test/FrontendC/2009-01-21-InvalidIterator.c
index 310ea3b..6ac61f8 100644
--- a/test/FrontendC/2009-01-21-InvalidIterator.c
+++ b/test/FrontendC/2009-01-21-InvalidIterator.c
@@ -1,4 +1,4 @@
-// RUN: %llvmgcc %s -S -g
+// RUN: %llvmgcc %s -S -g -o /dev/null
 
 typedef long unsigned int size_t;
 typedef unsigned short int uint16_t;