Small code change (omit default parameter)

Author: tobbi

src/audio/sound_manager.cpp

@@ -329,8 +329,8 @@ SoundManager::play_music(const std::string& filename, float fadetime)
     m_music_source = std::move(newmusic);
   } catch(std::exception& e) {
     log_warning << "Couldn't play music file '" << filename << "': " << e.what() << std::endl;
-    // When this happens, previous music continued playing, stop it, just in case.
-    stop_music(0);
+    // When this happens, the previous music continued playing. Stop it, just in case.
+    stop_music();
   }
 }