Don't loosely compare functions that return bool against a literal bool.

See #32444.


git-svn-id: https://develop.svn.wordpress.org/trunk@32730 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/includes/menu.php

@@ -182,7 +182,7 @@ unset($id, $data, $subs, $first_sub);
 $separator_found = false;
 foreach ( $menu as $id => $data ) {
 	if ( 0 == strcmp('wp-menu-separator', $data[4] ) ) {
-		if (false == $separator_found) {
+		if ( ! $separator_found ) {
 			$separator_found = true;
 		} else {
 			unset($menu[$id]);