add_timer error2 pls help

[BabaVoss]

how do i fix this?

this is the script on pc.c
 

	if (map_getcell( sd->bl.m, sd->bl.x, sd->bl.y, CELL_CHKPVP ) && battle_config.cellpvp_deathmatch && sd->state.pvp)
	{
		add_timer(tick+battle_config.cellpvp_deathmatch_delay, pc_deathmatch_timer, sd->bl.id, 0);
		return 1|8;
	}