winealsa: Set name of internal threads.

dlls/winealsa.drv/midi.c

@@ -114,6 +114,8 @@ static DWORD WINAPI notify_thread(void *p)
     struct notify_context notify;
     BOOL quit;
 
+    SetThreadDescription(GetCurrentThread(), L"winealsa_midi_notify");
+
     params.notify = &notify;
     params.quit = &quit;
 

dlls/winealsa.drv/mmdevdrv.c

@@ -238,6 +238,8 @@ static DWORD WINAPI alsa_timer_thread(void *user)
     struct timer_loop_params params;
     struct ACImpl *This = user;
 
+    SetThreadDescription(GetCurrentThread(), L"winealsa_timer");
+
     params.stream = This->stream;
 
     ALSA_CALL(timer_loop, &params);