Fixed a crash if for some reason a mob uses Blade Stop.

git-svn-id: https://svn.code.sf.net/p/rathena/svn/trunk@13567 54d463be-8e91-2dee-dedb-b68131a5f0ec

src/map/battle.c

@@ -2976,7 +2976,7 @@ enum damage_lv battle_weapon_attack(struct block_list* src, struct block_list* t
 		}
 	}
 
-	if( tsc && tsc->data[SC_BLADESTOP_WAIT] && !is_boss(src) && (src->type == BL_PC || distance_bl(src, target) <= (tsd->status.weapon == W_FIST ? 1 : 2)) )
+	if( tsc && tsc->data[SC_BLADESTOP_WAIT] && !is_boss(src) && (src->type == BL_PC || tsd == NULL || distance_bl(src, target) <= (tsd->status.weapon == W_FIST ? 1 : 2)) )
 	{
 		int skilllv = tsc->data[SC_BLADESTOP_WAIT]->val1;
 		int duration = skill_get_time2(MO_BLADESTOP,skilllv);