Ticket #19420: 19420.diff

wp-includes/ms-functions.php

@@ -323 +323 @@
         if ( $link == false ) {
                 switch_to_blog( $_blog_id );
                 $link = get_permalink( $post_id );
+                $link = str_replace( 'https://', 'http://', $link );
                 restore_current_blog();
                 wp_cache_add( $key, $link, 'site-options', 360 );
         }
-        return $link;
+        return apply_filters( 'get_blog_permalink', $link );
 }
 
 /**