winecoreaudio: Clean up the timer queue handle in DllMain().

dlls/winecoreaudio.drv/mmdevdrv.c

@@ -210,6 +210,7 @@ BOOL WINAPI DllMain(HINSTANCE dll, DWORD reason, void *reserved)
     case DLL_PROCESS_DETACH:
         if (reserved) break;
         DeleteCriticalSection(&g_sessions_lock);
+        CloseHandle(g_timer_q);
         break;
     }
     return TRUE;