Corrected Moon Slasher effect

* Now able to stop Boss monsters.
* Has a random duration of 1~3 seconds.
Thanks to @Playtester!

db/pre-re/skill_cast_db.txt

@@ -1390,7 +1390,7 @@
 //-- LG_BANDING
 2319,0,0,0,-1,2000:4000:6000:8000:10000,0
 //-- LG_MOONSLASHER
-2320,1000,1000,0,0,0,6000:5000:4000:3000:2000
+2320,1000,1000,0,1000,0,6000:5000:4000:3000:2000
 //-- LG_RAYOFGENESIS
 2321,2000:2500:3000:3500:4000,2000,0,10000,0,5000
 //-- LG_PIETY

db/re/skill_cast_db.txt

@@ -1405,7 +1405,7 @@
 //-- LG_BANDING
 2319,0,0,0,-1,2000:4000:6000:8000:10000,0,-1
 //-- LG_MOONSLASHER
-2320,1000,1000,0,0,0,6000:5000:4000:3000:2000,-1
+2320,1000,1000,0,1000,0,6000:5000:4000:3000:2000,-1
 //-- LG_RAYOFGENESIS
 2321,2000:2500:3000:3500:4000,2000,0,10000,0,5000,500
 //-- LG_PIETY

src/map/skill.c

@@ -1528,8 +1528,8 @@ int skill_additional_effect(struct block_list* src, struct block_list *bl, uint1
 		rate = 32 + 8 * skill_lv;
 		if( rnd()%100 < rate && dstsd ) // Uses skill_addtimerskill to avoid damage and setsit packet overlaping. Officially clif_setsit is received about 500 ms after damage packet.
 			skill_addtimerskill(src,tick+500,bl->id,0,0,skill_id,skill_lv,BF_WEAPON,0);
-		else if( dstmd && !is_boss(bl) )
-			sc_start(src,bl,SC_STOP,100,skill_lv,skill_get_time(skill_id,skill_lv));
+		else if( dstmd )
+			sc_start(src,bl,SC_STOP,100,skill_lv,skill_get_time(skill_id,skill_lv) + 1000 * (rnd()%3));
 		break;
 	case LG_RAYOFGENESIS:	// 50% chance to cause Blind on Undead and Demon monsters.
 		if ( battle_check_undead(status_get_race(bl), status_get_element(bl)) || status_get_race(bl) == RC_DEMON )