Make the GC stress builder go green.

test/cctest/cctest.h

Index: test/cctest/cctest.h
diff --git a/test/cctest/cctest.h b/test/cctest/cctest.h
index 44690b38aea6b935ccf985862e29bce1a7b4b543..30d9d7e20d2f85aa9946e7b70afe3d025a548261 100644
--- a/test/cctest/cctest.h
+++ b/test/cctest/cctest.h
@@ -242,7 +242,7 @@ static inline int FlagDependentPortOffset() {
 }
 
 
-// Helper function that simulates a fill new-space in the heap.
+// Helper function that simulates a full new-space in the heap.
 static inline void SimulateFullSpace(v8::internal::NewSpace* space) {
   int new_linear_size = static_cast<int>(
       *space->allocation_limit_address() - *space->allocation_top_address());