Merge branch 'i_setsongtrack-should-be-int32' into 'master'

I_SetSongTrack(int) should be I_SetSongTrack(INT32)

See merge request STJr/SRB2!2213

src/dummy/i_sound.c

@@ -164,7 +164,7 @@ void I_SetMusicVolume(UINT8 volume)
 	(void)volume;
 }
 
-boolean I_SetSongTrack(int track)
+boolean I_SetSongTrack(INT32 track)
 {
 	(void)track;
 	return false;

src/sdl/mixer_sound.c

@@ -1441,7 +1441,7 @@ void I_SetMusicVolume(UINT8 volume)
 	Mix_VolumeMusic(get_real_volume(music_volume));
 }
 
-boolean I_SetSongTrack(int track)
+boolean I_SetSongTrack(INT32 track)
 {
 #ifdef HAVE_GME
 	// If the specified track is within the number of tracks playing, then change it

src/sdl/sdl_sound.c

@@ -1471,7 +1471,7 @@ void I_SetMusicVolume(UINT8 volume)
 	(void)volume;
 }
 
-boolean I_SetSongTrack(int track)
+boolean I_SetSongTrack(INT32 track)
 {
 	(void)track;
 	return false;