This makes the Rocket League plugin work with Rocket League
running in Wine on Linux.
This is an example of the very little amount of work it can
take to make an existing Windows PA plugin work on Linux
with Wine.
Thanks to @mkrautz on Mumble IRC Chat for the compile fix (https://github.com/mumble-voip/mumble/pull/2195) and for helping me about memory addresses (pModule).
This probably would not have been possible without his help.
Thanks also to @hacst: he tried to troubleshoot my compile problem.