music: fix the main music playing at the wrong volume

Fixed quiet or mute main menu music if a level was exited while
underwater and the quiet, full but no ambient, quiet but no
ambient, or none underwater music behavior option was set.

Resolves #1540.

CHANGELOG.md

@@ -4,6 +4,7 @@
 - fixed ability to crash the game with extreme FOV values (regression from 0.9)
 - fixed double "Fly mode enabled" message when using `/fly` console command (regression from 4.0)
 - fixed crash in the `/set` console command (regression from 4.4)
+- fixed main menu music volume when exiting while underwater with certain music settings (#1540, regression from 4.4)
 
 ## [4.4](https://github.com/LostArtefacts/TR1X/compare/4.3-102-g458cd96...4.4) - 2024-09-20
 - added `/exit` command (#1462)

src/game/level.c

@@ -1149,6 +1149,7 @@ bool Level_Initialise(int32_t level_num)
     Overlay_BarSetHealthTimer(100);
 
     Music_Stop();
+    Music_SetVolume(g_Config.music_volume);
     Sound_ResetEffects();
 
     Viewport_SetFOV(Viewport_GetUserFOV());