extract,mp3: Plug a leak
extract,mp3: Plug a leak

Those loops bail out because the variable word hasn't been found to
contain non-blank characters, but it still may point out to strings
like "", so ensure that memory is freed.

hoheinzollern/tracker,outofbits/tracker,outofbits/tracker,outofbits/tracker,hoheinzollern/tracker,hoheinzollern/tracker,hoheinzollern/tracker,outofbits/tracker,outofbits/tracker,hoheinzollern/tracker,hoheinzollern/tracker,hoheinzollern/tracker,outofbits/tracker,outofbits/tracker