FCPPluginClient: Don't use a WeakReference to the intra-node client since it is the only object which will strongly reference this FCPPluginClient anyway
- Remember: For intra-node connections, the FCPPluginClient object is strongly references by the actual client app which uses it. No other fred code keeps a strong reference to such FCPPluginClient objects. So they can in turn strongly reference the client app because they will be GCed anyway once the client app stops referencing them.