Minor code improvements for quality

src/Models/SRI.php

@@ -3,6 +3,7 @@
 namespace Firesphere\CSPHeaders\Models;
 
 use SilverStripe\ORM\DataObject;
+use SilverStripe\Security\Member;
 use SilverStripe\Security\Permission;
 use SilverStripe\Security\PermissionProvider;
 
@@ -30,7 +31,7 @@ class SRI extends DataObject implements PermissionProvider
 
     /**
      * Created on request
-     * @param null $member
+     * @param null|Member $member
      * @param array $context
      * @return bool
      */
@@ -41,7 +42,7 @@ public function canCreate($member = null, $context = array())
 
     /**
      * If it needs to be edited, it should actually be recreated
-     * @param null $member
+     * @param null|Member $member
      * @return bool
      */
     public function canEdit($member = null)
@@ -50,7 +51,7 @@ public function canEdit($member = null)
     }
 
     /**
-     * @param null $member
+     * @param null|Member $member
      * @return bool|int
      */
     public function canDelete($member = null)

src/View/CSPBackend.php

@@ -223,7 +223,12 @@ public function includeInHTML($content): string
 
         // Skip if content isn't injectable, or there is nothing to inject
         $tagsAvailable = preg_match('#</head\b#', $content);
-        $hasFiles = $this->css || $this->javascript || $this->customCSS || $this->customScript || $this->customHeadTags;
+        $hasFiles = count($this->css) ||
+            count($this->javascript) ||
+            count($this->customCSS) ||
+            count($this->customScript) ||
+            count($this->customHeadTags);
+
         if (!$tagsAvailable || !$hasFiles) {
             return $content;
         }