Fixing a crash on exit when using the Blenderplayer on win32. When free_blender() was freeing main, main was garbage since the blend file data was already freed. So, I just replaced free_blender) with IMB_exit() and free_nodesystem(). Using free_blender() worked when I was in Linux running tests. That or I'm just gong crazy. ;)

source/gameengine/GamePlayer/ghost/GPG_ghost.cpp

@@ -946,7 +946,8 @@ int main(int argc, char** argv)
 	// Cleanup
 	RNA_exit();
 	BLF_exit();
-	free_blender();
+	IMB_exit();
+	free_nodesystem();
 
 	SYS_DeleteSystem(syshandle);