change null comparation position

Author: ihormandzyuk

Controller/Adminhtml/Actions.php

@@ -439,11 +439,11 @@ protected function _massStatusAction()
             $status = $this->getRequest()->getParam('status');
             $statusFieldName = $this->_statusField;
 
-            if ($status === null) {
+            if (null === $status) {
                 throw new Exception(__('Parameter "Status" missing in request data.'));
             }
 
-            if ($statusFieldName === null) {
+            if (null === $statusFieldName) {
                 throw new Exception(__('Status Field Name is not specified.'));
             }
 
@@ -529,7 +529,7 @@ protected function filterParams($data)
      */
     protected function _getRegistry()
     {
-        if ($this->_coreRegistry === null) {
+        if (null === $this->_coreRegistry) {
             $this->_coreRegistry = $this->_objectManager->get(Registry::class);
         }
         return $this->_coreRegistry;
@@ -554,7 +554,7 @@ protected function _isAllowed()
      */
     protected function _getModel($load = true)
     {
-        if ($this->_model === null) {
+        if (null === $this->_model) {
             $this->_model = $this->_objectManager->create($this->_modelClass);
 
             $id = (int)$this->getRequest()->getParam($this->_idKey);

Model/AdminNotificationFeed.php

@@ -153,7 +153,7 @@ protected function _construct()
      */
     public function getFeedUrl()
     {
-        if ($this->_feedUrl === null) {
+        if (null === $this->_feedUrl) {
             $this->_feedUrl = 'https://mage'.'fan'
                 .'.c'.'om/community/notifications'.'/'.'feed/';
         }

Model/GetWebsitesMap.php

@@ -41,12 +41,12 @@ public function __construct(
      */
     public function execute(): array
     {
-        if ($this->websitesMap === null) {
+        if (null === $this->websitesMap) {
             $this->websitesMap = [];
             $websites = $this->storeManager->getWebsites();
             foreach ($websites as $website) {
                 // Continue if website has no store to be able to create catalog rule for website without store
-                if ($website->getDefaultStore() === null) {
+                if (null === $website->getDefaultStore()) {
                     continue;
                 }
                 $this->websitesMap[$website->getId()] = $website->getDefaultStore()->getId();