Shut up some Mac (xcode 3) warnings

Review URL: http://codereview.appspot.com/6503053/



git-svn-id: http://skia.googlecode.com/svn/trunk@5402 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/tests/ClipStackTest.cpp b/tests/ClipStackTest.cpp
index 19e28ad..8a74dc8 100644
--- a/tests/ClipStackTest.cpp
+++ b/tests/ClipStackTest.cpp
@@ -354,7 +354,7 @@
     }
 }
 
-int count(const SkClipStack& stack) {
+static int count(const SkClipStack& stack) {
 
     SkClipStack::Iter iter(stack, SkClipStack::Iter::kTop_IterStart);