Ticket #53278: 53278.diff

widgets.php

@@ -1565 +1565 @@
         echo '<ul>';
         foreach ( $rss->get_items( 0, $items ) as $item ) {
                 $link = $item->get_link();
-                while ( stristr( $link, 'http' ) !== $link ) {
+                while ( $link && stristr( $link, 'http' ) !== $link ) {
                         $link = substr( $link, 1 );
                 }
                 $link = esc_url( strip_tags( $link ) );

widgets/class-wp-widget-rss.php

@@ -50 +50 @@
                 }
 
                 $url = ! empty( $instance['url'] ) ? $instance['url'] : '';
-                while ( stristr( $url, 'http' ) !== $url ) {
+                while ( $url && stristr( $url, 'http' ) !== $url ) {
                         $url = substr( $url, 1 );
                 }
 
@@ -74 +74 @@
                                 $title = strip_tags( $rss->get_title() );
                         }
                         $link = strip_tags( $rss->get_permalink() );
-                        while ( stristr( $link, 'http' ) !== $link ) {
+                        while ( $link && stristr( $link, 'http' ) !== $link ) {
                                 $link = substr( $link, 1 );
                         }
                 }