[Telepathy] merge: telepathy-gabble

[Merge Monkey]

Merge to:

  telepathy-gabble

From:

  /home/cassidy/public_html/darcs/telepathy-gabble-fix-avatar-crash

Changes:

  Guillaume Desmottes <guillaume.desmottes at collabora.co.uk>
     don't crash if BINVAL markup is empty in vcard (fix LP #103978 and #75800)