fix identation

Author: verot

src/class.upload.php

@@ -2213,7 +2213,7 @@ function upload($file, $lang = 'en_GB') {
                 $this->uploaded = false;
                 $this->error = $this->translate('file_error');
             } else {
-		$file = (string) $file;
+                $file = (string) $file;
                 if (substr($file, 0, 4) == 'php:' || substr($file, 0, 5) == 'data:' || substr($file, 0, 7) == 'base64:') {
                     $data = null;