fix problem when not connected

TODO

@@ -22,3 +22,4 @@ TODO:
 - persist RipResult so rips can be aborted and continued too; needs verification
   of previously ripped files
 - write moovida plugin
+- cache results of MusicBrainz lookups

morituri/rip/cd.py

@@ -98,6 +98,7 @@ class Rip(logcommand.LogCommand):
         print "MusicBrainz disc id", mbdiscid
 
         # look up disc on musicbrainz
+        metadatas = None
         try:
             metadatas = program.musicbrainz(mbdiscid)
         except program.MusicBrainzException, e: