I_SetInternalMusicVolume other targets

src/android/i_sound.c

@@ -184,3 +184,8 @@ UINT32 I_GetMusicPosition(void)
 {
         return 0;
 }
+
+void I_SetInternalMusicVolume(UINT8 volume)
+{
+	(void)volume;
+}

src/djgppdos/i_sound.c

@@ -592,3 +592,8 @@ musictype_t I_MusicType(void)
 {
 	return MU_NONE;
 }
+
+void I_SetInternalMusicVolume(UINT8 volume)
+{
+	(void)volume;
+}

src/dummy/i_sound.c

@@ -146,6 +146,11 @@ boolean I_SetSongTrack(int track)
 	return false;
 }
 
+void I_SetInternalMusicVolume(UINT8 volume)
+{
+	(void)volume;
+}
+
 UINT32 I_GetMusicLength(void)
 {
 	return 0;

src/sdl/sdl_sound.c

@@ -1664,6 +1664,12 @@ musictype_t I_MusicType(void)
 	return MU_NONE;
 }
 
+void I_SetInternalMusicVolume(UINT8 volume)
+{
+	(void)volume;
+}
+
+
 void I_UnRegisterSong(INT32 handle)
 {
 #ifdef HAVE_MIXER
@@ -2021,6 +2027,11 @@ boolean I_SetSongTrack(int track)
 	return false;
 }
 
+void I_SetInternalMusicVolume(UINT8 volume)
+{
+	(void)volume;
+}
+
 #ifdef MIXER_POS
 static void SDLCALL I_FinishMusic(void)
 {

src/win32/win_snd.c

@@ -873,6 +873,11 @@ boolean I_SetSongTrack(INT32 track)
 	return false;
 }
 
+void I_SetInternalMusicVolume(UINT8 volume)
+{
+	(void)volume;
+}
+
 //
 // Fuck MIDI. ... Okay fine, you can have your silly D_-only mode.
 //