Fixed a ShowWarning call in skill_db.txt reading code using random data from the stack (bugreport:2282).

Blame goes to r5465 and all of the followups that moved, copypasted and even rewrote the message without noticing this mistake.

git-svn-id: https://svn.code.sf.net/p/rathena/svn/trunk@13239 54d463be-8e91-2dee-dedb-b68131a5f0ec

src/map/skill.c

@@ -11027,7 +11027,7 @@ static bool skill_parse_row_skilldb(char* split[], int columns, int current)
 	||  (id >= HM_SKILLRANGEMIN && id <= HM_SKILLRANGEMAX)
 	||  (id >= MC_SKILLRANGEMIN && id <= MC_SKILLRANGEMAX) )
 	{
-		ShowWarning("skill_parse_row_skilldb: Skill id %d is forbidden (interferes with guild/homun/mercenary skill mapping)!\n");
+		ShowWarning("skill_parse_row_skilldb: Skill id %d is forbidden (interferes with guild/homun/mercenary skill mapping)!\n", id);
 		return false;
 	}