Trigger event handlers when syncing channel

Found by: wilkowy
Patch by: michaelortmann
Fixes: #599

When the bot joins a chan, gotjoin() creates a member for the channel member list and then it resets the chan with flags CHAN_RESETALL, removing that member again. This PR unsets flag CHAN_RESETWHO for this very case, when the member list contains 1 member, which is the bot itself that just got created.

Author: michaelortmann

src/mod/irc.mod/chan.c

@@ -2109,7 +2109,10 @@ static int gotjoin(char *from, char *channame)
           else
             putlog(LOG_JOIN | LOG_MISC, chan->dname, "%s joined %s.", nick,
                    chname);
-          reset_chan_info(chan, (CHAN_RESETALL & ~CHAN_RESETTOPIC), 1);
+          reset_chan_info(chan, (CHAN_RESETALL & ~CHAN_RESETTOPIC &
+            (chan->channel.members == 1 ? ~CHAN_RESETWHO : CHAN_RESETALL)), /* do not remove myself again */
+            1);
+
         } else {
           struct chanuserrec *cr;