winecoreaudio: Move midi_out_get_num_devs to the unixlib.

dlls/winecoreaudio.drv/coremidi.c

@@ -614,6 +614,12 @@ static DWORD midi_out_get_devcaps(WORD dev_id, MIDIOUTCAPSW *caps, DWORD size)
     return MMSYSERR_NOERROR;
 }
 
+static DWORD midi_out_get_num_devs(void)
+{
+    TRACE("\n");
+    return num_dests;
+}
+
 NTSTATUS midi_out_message(void *args)
 {
     struct midi_out_message_params *params = args;
@@ -649,6 +655,9 @@ NTSTATUS midi_out_message(void *args)
     case MODM_GETDEVCAPS:
         *params->err = midi_out_get_devcaps(params->dev_id, (MIDIOUTCAPSW *)params->param_1, params->param_2);
         break;
+    case MODM_GETNUMDEVS:
+        *params->err = midi_out_get_num_devs();
+        break;
     default:
         TRACE("Unsupported message\n");
         *params->err = MMSYSERR_NOTSUPPORTED;

dlls/winecoreaudio.drv/midi.c

@@ -155,12 +155,6 @@ static void MIDI_NotifyClient(UINT wDevID, WORD wMsg, DWORD_PTR dwParam1, DWORD_
     DriverCallback(dwCallBack, uFlags, hDev, wMsg, dwInstance, dwParam1, dwParam2);
 }
 
-static DWORD MIDIOut_GetNumDevs(void)
-{
-    TRACE("\n");
-    return MIDIOut_NumDevs;
-}
-
 static DWORD MIDIOut_GetVolume(WORD wDevID, DWORD *lpdwVolume)
 {
     TRACE("%d\n", wDevID);
@@ -589,8 +583,6 @@ DWORD WINAPI CoreAudio_modMessage(UINT wDevID, UINT wMsg, DWORD_PTR dwUser, DWOR
     TRACE("%d %08x %08lx %08lx %08lx\n", wDevID, wMsg, dwUser, dwParam1, dwParam2);
 
     switch (wMsg) {
-        case MODM_GETNUMDEVS:
-            return MIDIOut_GetNumDevs();
         case MODM_GETVOLUME:
             return MIDIOut_GetVolume(wDevID, (DWORD*)dwParam1);
         case MODM_SETVOLUME: