Enable --verify-heap in release mode

test/cctest/test-debug.cc

Index: test/cctest/test-debug.cc
diff --git a/test/cctest/test-debug.cc b/test/cctest/test-debug.cc
index 60d5f0e450b62d232c65a0bc6cab0fc389bc2db7..e00ad5a271830f0ef85bbd513efe4ae27a465515 100644
--- a/test/cctest/test-debug.cc
+++ b/test/cctest/test-debug.cc
@@ -4026,15 +4026,12 @@ TEST(StepWithException) {
 
 
 TEST(DebugBreak) {
+#ifdef VERIFY_HEAP
+  i::FLAG_verify_heap = true;
+#endif
   v8::HandleScope scope;
   DebugLocalContext env;
 
-  // This test should be run with option --verify-heap. As --verify-heap is
-  // only available in debug mode only check for it in that case.
-#ifdef DEBUG
-  CHECK(v8::internal::FLAG_verify_heap);
-#endif
-
   // Register a debug event listener which sets the break flag and counts.
   v8::Debug::SetDebugEventListener(DebugEventBreak);