Properly cleanup the transcendental subcaches.

src/heap.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 2934 matching lines @@
     // For evaluating value.
     friend class TranscendentalCache;
 
     DISALLOW_COPY_AND_ASSIGN(SubCache);
   };
 
   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();
 
   // Instantiation
   friend class Isolate;
   // Inline implementation of the caching.
   friend class TranscendentalCacheStub;
   // Allow access to the caches_ array as an ExternalReference.
   friend class ExternalReference;
 
@@ skipping 109 matching lines @@
   DisallowHeapAllocation no_allocation;  // i.e. no gc allowed.
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(PathTracer);
 };
 #endif  // DEBUG
 
 } }  // namespace v8::internal
 
 #endif  // V8_HEAP_H_