Win, Ruby: Crashes when exiting after/while playing music

[jlnr]

Between Gosu and the Ruby GC, not all OpenAL resources are properly freed before OpenAL shuts itself down via the DllMain detach callback. Or, some may try to free themselves after OpenAL has been shut down.

This occasionally causes some crashes on shutdown, especially after music has been played.

Gosu for C++ is not affected.

[jlnr]

Should be fixed with the hotfix DLL from the forums:

http://www.libgosu.org/cgi-bin/mwf/topic_show.pl?pid=4749