Prevent stack overflow in the serializer/deserializer.

src/api.cc

Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index d962338198d9b9fb3452f18ea2719aa0d86bea48..e247eb2c41c387509bb0777df3d5ace0c7f302ef 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -379,7 +379,7 @@ StartupData V8::CreateSnapshotDataBlob(const char* custom_source) {
       i::SnapshotByteSink context_sink;
       i::PartialSerializer context_ser(internal_isolate, &ser, &context_sink);
       context_ser.Serialize(&raw_context);
-      ser.SerializeWeakReferences();
+      ser.SerializeWeakReferencesAndDeferred();
 
       result = i::Snapshot::CreateSnapshotBlob(ser, context_ser, metadata);
     }