Make this test portable.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162880 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/SemaObjC/nsobject-attribute.m b/test/SemaObjC/nsobject-attribute.m
index 133ca16..b794eaf 100644
--- a/test/SemaObjC/nsobject-attribute.m
+++ b/test/SemaObjC/nsobject-attribute.m
@@ -31,6 +31,7 @@
 
 @implementation HandTested
 @synthesize x=x;
+@synthesize myObj;
 @dynamic color;
 @end