Fix fix_cue_in to work with liquidsoap 1.2
Fix fix_cue_in to work with liquidsoap 1.2

The previous syntax only worked with 1.1, this one should work on both.

LibreTime/libretime,LibreTime/libretime,LibreTime/libretime,Lapotor/libretime,LibreTime/libretime,Lapotor/libretime,LibreTime/libretime,Lapotor/libretime,Lapotor/libretime,LibreTime/libretime,Lapotor/libretime,Lapotor/libretime