Solved the bug that made firewalls only castable a few times until you relogged. Thanks to Euph for the fix.

git-svn-id: https://svn.code.sf.net/p/rathena/svn/trunk@6959 54d463be-8e91-2dee-dedb-b68131a5f0ec

Changelog-Trunk.txt

@@ -4,6 +4,8 @@ AS OF SVN REV. 5091, WE ARE NOW USING TRUNK.  ALL UNTESTED BUGFIXES/FEATURES GO
 IF YOU HAVE A WORKING AND TESTED BUGFIX PUT IT INTO STABLE AS WELL AS TRUNK.
 
 2006/06/03
+	* Solved the bug that made firewalls only castable a few times until [MasterOfMuppets]
+	  you relogged. Thanks to Euph for the fix.
 	* Added variable other_mapserver_count to chrif.c which holds total count
 	  of connected map-servers. By using this we prevent sending unnecessary
 	  packets to the char-server when there's no more map-servers connected.

src/map/skill.c

@@ -6689,7 +6689,7 @@ int skill_unit_onplace_timer(struct skill_unit *src,struct block_list *bl,unsign
 				skill_attack(BF_MAGIC,ss,&src->bl,bl,sg->skill_id,sg->skill_lv,tick,0);
 				src->val2--;
 			}
-			if (src->val2<=0)
+			if (--src->val2<=0)
 				skill_delunit(src);
 		break;
 		}