Tweak tests to hopefully fix include of limits.h on win32.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106639 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Analysis/additive-folding-range-constraints.c b/test/Analysis/additive-folding-range-constraints.c
index 1202328..b2c797d 100644
--- a/test/Analysis/additive-folding-range-constraints.c
+++ b/test/Analysis/additive-folding-range-constraints.c
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -analyze -analyzer-check-objc-mem -analyzer-experimental-checks -verify -analyzer-constraints=range %s
+// RUN: %clang_cc1 -analyze -analyzer-check-objc-mem -analyzer-experimental-checks -verify -analyzer-constraints=range -fms-extensions %s
 #include <limits.h>
 
 // These are used to trigger warnings.