Ticket #33641: 33641.diff

src/wp-includes/media.php

@@ -1003 +1003 @@
  * @return string|bool A valid source size value for use in a 'sizes' attribute or false.
  */
 function wp_get_attachment_image_sizes( $attachment_id, $size = 'medium', $args = null ) {
-
+        $img_width = 0;
         // Try to get the image width from $args.
         if ( is_array( $args ) && ! empty( $args['width'] ) ) {
                 $img_width = (int) $args['width'];