output/Source: un-inline Cancel()

src/output/Source.cxx

@@ -71,6 +71,13 @@ AudioOutputSource::Close()
 }
 
 void
+AudioOutputSource::Cancel()
+{
+	current_chunk = nullptr;
+	pipe.Cancel();
+}
+
+void
 AudioOutputSource::OpenFilter(AudioFormat audio_format,
 			      PreparedFilter *prepared_replay_gain_filter,
 			      PreparedFilter *prepared_other_replay_gain_filter,

src/output/Source.hxx

@@ -139,11 +139,7 @@ public:
 			 PreparedFilter *prepared_filter);
 
 	void Close();
-
-	void Cancel() {
-		current_chunk = nullptr;
-		pipe.Cancel();
-	}
+	void Cancel();
 
 	/**
 	 * Ensure that ReadTag() or PeekData() return any input.