cue_parser: fix memory leak

NEWS

@@ -7,6 +7,8 @@ ver 0.17.3 (2012/??/??)
 * decoder:
   - ffmpeg: ignore negative time stamps
   - ffmpeg: support planar audio
+* playlist:
+  - cue: fix memory leak
 
 ver 0.17.2 (2012/09/30)
 * protocol:

src/cue/cue_parser.c

@@ -85,6 +85,9 @@ cue_parser_free(struct cue_parser *parser)
 	if (parser->current != NULL)
 		song_free(parser->current);
 
+	if (parser->previous != NULL)
+		song_free(parser->previous);
+
 	if (parser->finished != NULL)
 		song_free(parser->finished);