Set result pointer before clearing it. (#79)

While working with babylon we encountered issue when calling 
`env.drop_wrapped` calls `napi_remove_wrap` which is implemented
[here](https://github.com/BabylonJS/JsRuntimeHost/blob/397c12a0f17111715177cb59364361b21905f3de/Core/Node-API/Source/js_native_api_javascriptcore.cc#L1778)
for Javascriptcore

It should set result to the wrapped data pointer, but that
implementation will always set it to null.

This change ensures that the result pointer is correctly set to the
wrapped data pointer before clearing it.

---------

Co-authored-by: Gary Hsu <[email protected]>

Author: shial4

Core/Node-API/Source/js_native_api_javascriptcore.cc

@@ -1784,9 +1784,10 @@ napi_status napi_remove_wrap(napi_env env, napi_value js_object, void** result)
   WrapperInfo* info{};
   CHECK_NAPI(WrapperInfo::Unwrap(env, js_object, &info));
   RETURN_STATUS_IF_FALSE(env, info != nullptr && info->Data() != nullptr, napi_invalid_arg);
-  info->Data(nullptr);
 
   *result = info->Data();
+  info->Data(nullptr);
+  
   return napi_ok;
 }