Small error in edition

[Fratini]

I'm stuck in one problem:

	CC	channel.c
channel.c: In function 'channel_name2channel':
channel.c:434: error: 'channel' undeclared (first use in this function)
channel.c:434: error: (Each undeclared identifier is reported only once
channel.c:434: error: for each function it appears in.)
make[1]: *** [obj/channel.o] Error 1
make[1]: Leaving directory `/home/rlcpba9c/emulador/src/map'
make: *** [map] Error 2

In channel.c 434:

struct Channel* channel_name2channel(char *chname, struct map_session_data *sd, int flag){	
	if(channel_chk(chname, NULL, 1))
		return NULL;
	if(sd && strcmpi(chname + 1,Channel_Config.map_chname) == 0){
		if(flag&1 && !map[sd->bl.m].channel)
			map[sd->bl.m].channel = channel_create(Channel_Config.map_chname,NULL,Channel_Config.map_chcolor,CHAN_TYPE_MAP,sd->bl.m);
		if(flag&2)
			channel_mjoin(sd);
		return map[sd->bl.m].channel;
	}
	else if(sd && (strcmpi(chname + 1,Channel_Config.ally_chname) == 0) && sd->guild){
		if(flag&1 && !sd->guild->channel)
			sd->guild->channel = channel_create(Channel_Config.ally_chname,NULL,Channel_Config.ally_chcolor,CHAN_TYPE_ALLY,sd->guild->guild_id);
		if(flag&2)
			channel_gjoin(sd,3);
		return sd->guild->channel;
	}
	else if(sd && (strcmpi(chname + 1,Channel_Config.faction_chname) == 0) && sd->status.faction_id){
		struct faction_data *fdb = faction_search(sd->status.faction_id);
/*434:*/	channel = fdb->channel;
		if(flag&1 && !channel) {
			channel = channel_create(Channel_Config.faction_chname,NULL,Channel_Config.faction_chcolor,CHAN_TYPE_FACTION,sd->status.faction_id);
			if(flag&2) channel_gjoin(sd,3);
			fdb->channel = channel;
		}
	}
	else
		return (struct Channel*) strdb_get(channel_db, chname + 1);
	return NULL;
}

I have no idea what is the problem... If someone can help I'll be grateful!
 
Thank you for your time.