--- df_linux_orig/g_src/music_and_sound_openal.cpp	2022-05-01 14:52:07.054022447 +0200
+++ df_linux/g_src/music_and_sound_openal.cpp	2022-05-01 15:20:17.963764833 +0200
@@ -480,7 +480,7 @@
 
 void alEnable( ALenum capability ) { _alEnable(capability); }
 void alDisable( ALenum capability ) { _alDisable(capability); }
-ALboolean alIsEnabled( ALenum capability ) { _alIsEnabled(capability); }
+ALboolean alIsEnabled( ALenum capability ) { return _alIsEnabled(capability); }
 const ALchar* alGetString( ALenum param ) { return _alGetString(param); }
 void alGetBooleanv( ALenum param, ALboolean* data ) { _alGetBooleanv(param, data); }
 void alGetIntegerv( ALenum param, ALint* data ) { _alGetIntegerv(param, data); }
@@ -490,7 +490,7 @@
 ALint alGetInteger( ALenum param ) { return _alGetInteger(param); }
 ALfloat alGetFloat( ALenum param ) { return _alGetFloat(param); }
 ALdouble alGetDouble( ALenum param ) { return _alGetDouble(param); }
-ALenum alGetError( void ) { _alGetError(); }
+ALenum alGetError( void ) { return _alGetError(); }
 ALboolean alIsExtensionPresent( const ALchar* extname ) { return _alIsExtensionPresent(extname); }
 void* alGetProcAddress( const ALchar* fname ) { return _alGetProcAddress(fname); }
 ALenum alGetEnumValue( const ALchar* ename ) { return _alGetEnumValue(ename); }