Index: src/wp-admin/includes/bookmark.php
===================================================================
--- src/wp-admin/includes/bookmark.php	(revision 47850)
+++ src/wp-admin/includes/bookmark.php	(working copy)
@@ -286,7 +286,7 @@
 	$link = wp_slash( $link );
 
 	// Passed link category list overwrites existing category list if not empty.
-	if ( isset( $linkdata['link_category'] ) && is_array( $linkdata['link_category'] ) && 0 != count( $linkdata['link_category'] ) ) {
+	if ( isset( $linkdata['link_category'] ) && is_array( $linkdata['link_category'] ) && 0 !== count( $linkdata['link_category'] ) ) {
 		$link_cats = $linkdata['link_category'];
 	} else {
 		$link_cats = $link['link_category'];