Add other player in mail transactions (#7568)

* Add other player's char_id in mail transactions

Thanks to @tokeiburu

Co-authored-by: Lemongrass3110 <lemongrass@kstp.at>

src/map/script.cpp

@@ -13120,7 +13120,7 @@ BUILDIN_FUNC(warpwaitingpc)
 			{// no zeny to cover set fee
 				break;
 			}
-			pc_payzeny(sd, cd->zeny, LOG_TYPE_NPC, NULL);
+			pc_payzeny(sd, cd->zeny, LOG_TYPE_NPC);
 		}
 
 		mapreg_setreg(reference_uid(add_str("$@warpwaitingpc"), i), sd->bl.id);