that isn't in a channel with the client (god knows how *that* happens, but
someone reported the bug...) could crash the client, because a NULL pointer
is passed to logmsg(). The bug didn't show under glibc because it handles
the NULL pointer OK.
git-svn-id: svn://svn.code.sf.net/p/bitchx/code/trunk@58 13b04d17-f746-0410-82c6-800466cd88b0