pidgin/pidgin

g_task_return_* refs a task so we need to make sure we remove our reference when we're done with the task.

Testing Done:
Compiled and connected to bonjour and xmpp locally.

Reviewed at https://reviews.imfreedom.org/r/470/
libpurple/data/purple-url-handler.desktop.in
libpurple/protocols/null/nullprpl.c
pidgin/data/im.pidgin.Pidgin.desktop.in
sub/libpurple/data/purple-url-handler.desktop.in
sub/libpurple/protocols/null/nullprpl.c
sub/pidgin/data/im.pidgin.Pidgin.desktop.in