Really disable test when running with optimize for size

R=bmeurer@chromium.org
TBR=bmeurer@chromium.org
LOG=n
BUG=none

Review URL: https://codereview.chromium.org/652903008

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24795 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

test/cctest/test-spaces.cc

@@ -472,7 +472,7 @@ static inline void FillCurrentPage(v8::internal::NewSpace* space) {
 
 UNINITIALIZED_TEST(NewSpaceGrowsToTargetCapacity) {
   FLAG_target_semi_space_size = 2;
-  FLAG_optimize_for_size = false;
+  if (FLAG_optimize_for_size) return;
 
   v8::Isolate* isolate = v8::Isolate::New();
   {