Fix no damage chance for catapult with no ballistics

lib/spells/effects/Catapult.cpp

@@ -263,7 +263,7 @@ void Catapult::adjustHitChance()
 	vstd::abetween(wall, 0, 100);
 	vstd::abetween(crit, 0, 100);
 	vstd::abetween(hit, 0, 100 - crit);
-	vstd::amin(noDmg, 100 - hit - crit);
+	noDmg = 100 - hit - crit;
 }
 
 void Catapult::serializeJsonEffect(JsonSerializeFormat & handler)