fix: split isset() to single argument per call

Author: stodorovic

plugins/multisite.php

@@ -22,7 +22,7 @@ function wp_super_cache_blogs_field( $name, $blog_id ) {
 
 	$blog_id = (int) $blog_id;
 
-	if ( isset( $_GET['id'], $_GET['action'], $_GET['_wpnonce'] ) // phpcs:ignore WordPress.Security.NonceVerification.Recommended
+	if ( isset( $_GET['id'] ) && isset( $_GET['action'] ) && isset( $_GET['_wpnonce'] ) // phpcs:ignore WordPress.Security.NonceVerification.Recommended
 		&& filter_input( INPUT_GET, 'id', FILTER_VALIDATE_INT ) === $blog_id
 		&& wp_verify_nonce( sanitize_text_field( wp_unslash( $_GET['_wpnonce'] ) ), 'wp-cache' . $blog_id ) // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
 	) {