pidgin/ljfisher-ssl-client-auth

Suppress error spews when we've left an IRC channel but the window is open.

My take on a patch from Florian Quèze to fix yet another IRC WHO problem.
noinst_LTLIBRARIES=libpurple-ciphers.la
libpurple_ciphers_la_SOURCES=\
des.c \
gchecksum.c \
hmac.c \
md4.c \
md5.c \
rc4.c \
sha1.c \
sha256.c
INCLUDES = -I$(top_srcdir)/libpurple
AM_CPPFLAGS = \
$(GLIB_CFLAGS)