summary: XMPP custom smiley parsing bug
discoveredBy: Florob, Waqas, Paul Aurich and Marcus Lundblad
The XMPP protocol plugin can crash when attempting to process an error response
as a custom smiley. libpurple 2.5.2 through 2.6.1 are vulnerable. Older versions
may be vulnerable as well.
Handle error iq responses appropriately.