Fixed some inspection issues

src/Services/Attachments/AttachmentSubmitHandler.php

@@ -448,7 +448,7 @@ class AttachmentSubmitHandler
             'g' => 1000 * 1000 * 1000,
             'gi' => 1 << 30,
         ];
-        if (ctype_digit((string) $maxSize)) {
+        if (ctype_digit($maxSize)) {
             return (int) $maxSize;
         }
 

src/Services/Attachments/FileTypeFilterTools.php

@@ -119,6 +119,9 @@ class FileTypeFilterTools
                 //Convert jpg to .jpg
                 $element = '.'.$element;
             }
+
+            //Prevent weird side effects
+            unset($element);
         }
 
         $elements = array_unique($elements);