winecoreaudio: Move midi_in_get_num_devs to the unixlib.

dlls/winecoreaudio.drv/coremidi.c

@@ -845,6 +845,12 @@ static DWORD midi_in_get_devcaps(WORD dev_id, MIDIINCAPSW *caps, DWORD size)
     return MMSYSERR_NOERROR;
 }
 
+static DWORD midi_in_get_num_devs(void)
+{
+    TRACE("\n");
+    return num_srcs;
+}
+
 NTSTATUS midi_out_message(void *args)
 {
     struct midi_out_message_params *params = args;
@@ -929,6 +935,9 @@ NTSTATUS midi_in_message(void *args)
     case MIDM_GETDEVCAPS:
         *params->err = midi_in_get_devcaps(params->dev_id, (MIDIINCAPSW *)params->param_1, params->param_2);
         break;
+    case MIDM_GETNUMDEVS:
+        *params->err = midi_in_get_num_devs();
+        break;
     default:
         TRACE("Unsupported message\n");
         *params->err = MMSYSERR_NOTSUPPORTED;

dlls/winecoreaudio.drv/midi.c

@@ -194,12 +194,6 @@ static DWORD MIDIIn_AddBuffer(WORD wDevID, LPMIDIHDR lpMidiHdr, DWORD dwSize)
     return MMSYSERR_NOERROR;
 }
 
-static DWORD MIDIIn_GetNumDevs(void)
-{
-    TRACE("\n");
-    return MIDIIn_NumDevs;
-}
-
 static DWORD MIDIIn_Start(WORD wDevID)
 {
     TRACE("%d\n", wDevID);
@@ -420,8 +414,6 @@ DWORD WINAPI CoreAudio_midMessage(UINT wDevID, UINT wMsg, DWORD_PTR dwUser, DWOR
     switch (wMsg) {
         case MIDM_ADDBUFFER:
             return MIDIIn_AddBuffer(wDevID, (LPMIDIHDR)dwParam1, dwParam2);
-        case MIDM_GETNUMDEVS:
-            return MIDIIn_GetNumDevs();
         case MIDM_START:
             return MIDIIn_Start(wDevID);
         case MIDM_STOP: