fix: hazard level up (opentibiabr#1883)

Fixes a typo in level up function as well as simplified levelUp
function.
Also set maxLevel base as 1 to handle nil values in getPlayerMaxLevel

data/libs/hazard_lib.lua

@@ -88,30 +88,22 @@ function Hazard:getPlayerMaxLevel(player)
 		local fromStorage = player:getStorageValue(self.storageMax)
 		return fromStorage <= 0 and 1 or fromStorage
 	end
-	local fromKV = player:kv():scoped(self.name):get("maxLevel")
+	local fromKV = player:kv():scoped(self.name):get("maxLevel") or 1
+
 	return fromKV <= 0 and 1 or fromKV
 end
 
 function Hazard:levelUp(player)
-	if self.storageMax and self.storageCurrent then
-		local current = self:getPlayerCurrentLevel(player)
-		local max = self:getPlayerMaxLevel(player)
-		if current == max then
-			self:setPlayerMaxLevel(player, max + 1)
-		end
-		return
-	end
-
-	local current = player:kv(self.name):get("currentLevel")
-	local max = player:kv(self.name):get("maxLevel")
+	local current = self:getPlayerCurrentLevel(player)
+	local max = self:getPlayerMaxLevel(player)
 	if current == max then
-		player:kv(self.name):set("maxLevel", max + 1)
+		self:setPlayerMaxLevel(player, max + 1)
 	end
 end
 
 function Hazard:setPlayerMaxLevel(player, level)
-	if level > self.maxLevelLevel then
-		level = self.maxLevelLevel
+	if level > self.maxLevel then
+		level = self.maxLevel
 	end
 
 	if self.storageMax then