player: removed player_control.fileTime

This variable is superfluous, it is only used to copy its value to
player_control.totalTime.  Since the original source of this value
(song->tag->time) will still be available at this point, we can safely
remove fileTime.

src/player_thread.c

@@ -60,7 +60,8 @@ static int waitOnDecode(int *decodeWaitedOn)
 		return -1;
 	}
 
-	pc.totalTime = pc.fileTime;
+	pc.totalTime = pc.next_song->tag != NULL
+		? pc.next_song->tag->time : 0;
 	pc.bitRate = 0;
 	audio_format_clear(&pc.audio_format);
 	*decodeWaitedOn = 1;