app-Tygh-Backend-Storage-File.php.diff

diff --git a/app/Tygh/Backend/Storage/File.php b/app/Tygh/Backend/Storage/File.php
index 70d4a0d..be3910f 100644
--- a/app/Tygh/Backend/Storage/File.php
+++ b/app/Tygh/Backend/Storage/File.php
@@ -124,7 +124,9 @@ class File extends ABackend
             return $file;
         }
 
-        if ($this->getOption('cdn') && Cdn::instance()->getOption('is_enabled')) {
+        $is_cdn = ($this->getOption('cdn') && Cdn::instance()->getOption('is_enabled'));
+
+        if ($is_cdn) {
             if ($protocol == 'http') {
                 $prefix = 'http:';
             } elseif ($protocol == 'https') {
@@ -149,9 +151,11 @@ class File extends ABackend
             }
         }
 
-        $real_file = $this->getAbsolutePath($file);
-        if (is_file($real_file)) { // add timestamp to files only, skip dirs
-            $file .= '?t=' . filemtime($real_file);
+        if ($is_cdn) {
+            $real_file = $this->getAbsolutePath($file);
+            if (is_file($real_file)) { // add timestamp to files only, skip dirs
+                $file .= '?t=' . filemtime($real_file);
+            }
         }
 
         $path = str_replace(Registry::get('config.dir.root'), '', $this->prefix($file));