queue/Listener: add `noexcept`

src/Partition.cxx

@@ -115,19 +115,19 @@ Partition::BorderPause()
 }
 
 void
-Partition::OnQueueModified()
+Partition::OnQueueModified() noexcept
 {
 	EmitIdle(IDLE_PLAYLIST);
 }
 
 void
-Partition::OnQueueOptionsChanged()
+Partition::OnQueueOptionsChanged() noexcept
 {
 	EmitIdle(IDLE_OPTIONS);
 }
 
 void
-Partition::OnQueueSongStarted()
+Partition::OnQueueSongStarted() noexcept
 {
 	EmitIdle(IDLE_PLAYER);
 }

src/Partition.hxx

@@ -247,9 +247,9 @@ struct Partition final : QueueListener, PlayerListener, MixerListener {
 
 private:
 	/* virtual methods from class QueueListener */
-	void OnQueueModified() override;
-	void OnQueueOptionsChanged() override;
-	void OnQueueSongStarted() override;
+	void OnQueueModified() noexcept override;
+	void OnQueueOptionsChanged() noexcept override;
+	void OnQueueSongStarted() noexcept override;
 
 	/* virtual methods from class PlayerListener */
 	void OnPlayerSync() noexcept override;

src/queue/Listener.hxx

@@ -25,19 +25,19 @@ public:
 	/**
 	 * Called after the queue has been modified.
 	 */
-	virtual void OnQueueModified() = 0;
+	virtual void OnQueueModified() noexcept = 0;
 
 	/**
 	 * Called after a playback options have been changed.
 	 */
-	virtual void OnQueueOptionsChanged() = 0;
+	virtual void OnQueueOptionsChanged() noexcept = 0;
 
 	/**
 	 * Called after the player has started playing a new song.
 	 * This gets called by playlist::SyncWithPlayer() after it has
 	 * been notified by the player thread.
 	 */
-	virtual void OnQueueSongStarted() = 0;
+	virtual void OnQueueSongStarted() noexcept = 0;
 };
 
 #endif