Preprocessor tests are whitespace sensitive, as per Revision: 85170 review.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@85194 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Preprocessor/macro_disable3.c b/test/Preprocessor/macro_disable3.c
index 2983f2d..d4a5664 100644
--- a/test/Preprocessor/macro_disable3.c
+++ b/test/Preprocessor/macro_disable3.c
@@ -1,4 +1,4 @@
-// RUN: clang-cc %s -E | FileCheck %s
+// RUN: clang-cc %s -E | FileCheck -strict-whitespace %s
 // Check for C99 6.10.3.4p2.
 
 #define f(a) f(x * (a))