Add a test triple. Who knew that all the world wasn't darwin?

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@140408 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/SemaObjC/attr-availability.m b/test/SemaObjC/attr-availability.m
index 8511d13..d857bda 100644
--- a/test/SemaObjC/attr-availability.m
+++ b/test/SemaObjC/attr-availability.m
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -fsyntax-only -verify %s
+// RUN: %clang_cc1 -triple x86_64-apple-darwin9.0.0 -fsyntax-only -verify %s
 @interface A
 - (void)method __attribute__((availability(macosx,introduced=10.1,deprecated=10.2)));
 @end