Re-request Authorization with libpurple?

[michaelcbrook at msn.com]

Thinking this was another casting issue, I tried casting the type for
the callback to PurpleCallback, since that looks like the correct type
in libpurple's source code, but I still get the same error that there's
too many arguments:

((PurpleCallback)menu_action->callback)((PurpleBlistNode *)buddy);

And then if I try calling the callback with no arguments at all, it
segfaults...

Am I missing something?

Thanks,
-Michael