Fix mem leaks in tests.

src/api.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "api.h"
 
 #include <string.h>  // For memcpy, strlen.
 #ifdef V8_USE_ADDRESS_SANITIZER
 #include <sanitizer/asan_interface.h>
 #endif  // V8_USE_ADDRESS_SANITIZER
@@ skipping 1710 matching lines @@
                                    name_obj,
                                    line_offset,
                                    column_offset,
                                    is_shared_cross_origin,
                                    isolate->global_context(),
                                    NULL,
                                    &script_data_impl,
                                    cached_data_mode,
                                    i::NOT_NATIVES_CODE);
     has_pending_exception = result.is_null();
+    if (has_pending_exception && cached_data_mode == i::CONSUME_CACHED_DATA) {
+      // This case won't happen during normal operation; we have compiled
+      // successfully and produced cached data, and but the second compilation
+      // of the same source code fails.
+      delete script_data_impl;
+      script_data_impl = NULL;
+    }
     EXCEPTION_BAILOUT_CHECK(isolate, Local<UnboundScript>());
     raw_result = *result;
     if ((options & kProduceDataToCache) && script_data_impl != NULL) {
       // script_data_impl now contains the data that was generated. source will
       // take the ownership.
       source->cached_data = new CachedData(
           reinterpret_cast<const uint8_t*>(script_data_impl->Data()),
           script_data_impl->Length(), CachedData::BufferOwned);
       script_data_impl->owns_store_ = false;
     }
@@ skipping 5818 matching lines @@
   Isolate* isolate = reinterpret_cast<Isolate*>(info.GetIsolate());
   Address callback_address =
       reinterpret_cast<Address>(reinterpret_cast<intptr_t>(callback));
   VMState<EXTERNAL> state(isolate);
   ExternalCallbackScope call_scope(isolate, callback_address);
   callback(info);
 }
 
 
 } }  // namespace v8::internal