Properly cleanup the transcendental subcaches.

R=danno@chromium.org

Review URL: https://codereview.chromium.org/18487002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15437 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/heap.h

@@ -2952,6 +2952,10 @@ class TranscendentalCache {
     for (int i = 0; i < kNumberOfCaches; ++i) caches_[i] = NULL;
   }
 
+  ~TranscendentalCache() {
+    for (int i = 0; i < kNumberOfCaches; ++i) delete caches_[i];
+  }
+
   // Used to create an external reference.
   inline Address cache_array_address();