Don't show the "missing" image (#595921).
Don't show the "missing" image (#595921).

If the icon theme doesn't have the protocol icon for the account we
currently selected, show a default icon.

GNOME/telepathy-account-widgets,GNOME/telepathy-account-widgets,GNOME/telepathy-account-widgets,Distrotech/telepathy-account-widgets,Distrotech/telepathy-account-widgets