Fix leak in cctest/test-heap/ReleaseStackTraceData

test/cctest/test-heap.cc

 // 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 3369 matching lines @@
     ReleaseStackTraceDataTest(isolate, source2, setter);
     // We do not test source3 and source4 with setter, since the setter is
     // supposed to (untypically) write to the receiver, not the holder.  This is
     // to emulate the behavior of a data property.
 
     ReleaseStackTraceDataTest(isolate, source1, getter);
     ReleaseStackTraceDataTest(isolate, source2, getter);
     ReleaseStackTraceDataTest(isolate, source3, getter);
     ReleaseStackTraceDataTest(isolate, source4, getter);
   }
+  isolate->Dispose();
 }
 
 
 TEST(Regress159140) {
   i::FLAG_allow_natives_syntax = true;
   i::FLAG_flush_code_incrementally = true;
   CcTest::InitializeVM();
   Isolate* isolate = CcTest::i_isolate();
   Heap* heap = isolate->heap();
   HandleScope scope(isolate);
@@ skipping 1100 matching lines @@
 #ifdef DEBUG
 TEST(PathTracer) {
   CcTest::InitializeVM();
   v8::HandleScope scope(CcTest::isolate());
 
   v8::Local<v8::Value> result = CompileRun("'abc'");
   Handle<Object> o = v8::Utils::OpenHandle(*result);
   CcTest::i_isolate()->heap()->TracePathToObject(*o);
 }
 #endif  // DEBUG