PriceListTreeHandler TypeErrors fix

Author: Alex Hotsaliyk

src/Oro/Bundle/PricingBundle/Model/PriceListTreeHandler.php

@@ -88,15 +88,18 @@ public function getPriceList(Customer $customer = null, Website $website = null)
         }
 
         $priceList = null;
-        if ($customer) {
-            $priceList = $this->getPriceListByCustomer($customer, $website);
-        }
-        if (!$priceList) {
-            $priceList = $this->getPriceListByAnonymousCustomerGroup($website);
-        }
-        if (!$priceList) {
-            $priceList = $this->getPriceListRepository()->getPriceListByWebsite($website);
+        if ($website) {
+            if ($customer) {
+                $priceList = $this->getPriceListByCustomer($customer, $website);
+            }
+            if (!$priceList) {
+                $priceList = $this->getPriceListByAnonymousCustomerGroup($website);
+            }
+            if (!$priceList) {
+                $priceList = $this->getPriceListRepository()->getPriceListByWebsite($website);
+            }
         }
+
         if (!$priceList) {
             $priceList = $this->getPriceListFromConfig();
         }
@@ -123,8 +126,8 @@ protected function getPriceListByCustomer(Customer $customer, Website $website)
     }
 
     /**
-     * @param Customer|null $customer
-     * @param Website|null $website
+     * @param Customer $customer
+     * @param Website $website
      * @return null|CombinedPriceList
      */
     protected function getPriceListByCustomerGroup(Customer $customer, Website $website)
@@ -139,7 +142,7 @@ protected function getPriceListByCustomerGroup(Customer $customer, Website $webs
     }
 
     /**
-     * @param Website|null $website
+     * @param Website $website
      * @return null|CombinedPriceList
      */
     protected function getPriceListByAnonymousCustomerGroup(Website $website)