Merged a critical fix to charserver online tracking code (see r13087).

Corrected wrong variable use in txt charserver online tracking code (mistake in r4726).

git-svn-id: https://svn.code.sf.net/p/rathena/svn/trunk@13089 54d463be-8e91-2dee-dedb-b68131a5f0ec

src/char/char.c

@@ -2575,7 +2575,7 @@ int parse_frommap(int fd)
 				mapif_sendallwos(fd, buf, WBUFW(buf,2));
 			}
 			server[id].fd = -1;
-			online_char_db->foreach(online_char_db,char_db_setoffline,i); //Tag relevant chars as 'in disconnected' server.
+			online_char_db->foreach(online_char_db,char_db_setoffline,id); //Tag relevant chars as 'in disconnected' server.
 		}
 		do_close(fd);
 		create_online_files();