Ticket #2312: 2312.diff

wp-includes/functions.php

@@ -1791 +1791 @@
                 $template = $theme_data['Template'];
                 $stylesheet = dirname($theme_file);
 
-                $screenshot = glob("$theme_root/$stylesheet/screenshot.*");
-                if ( !empty( $screenshot ) )
-                        $screenshot = basename( $screenshot[0] );
-                else
-                        $screenshot = false;
+                foreach (array('png', 'gif', 'jpg', 'jpeg') as $ext) {
+                        if (file_exists("$theme_root/$stylesheet/screenshot.$ext")) {
+                                $screenshot = "screenshot.$ext";
+                                break;
+                        }
+                }
 
                 if ( empty($name) ) {
                         $name = dirname($theme_file);