Update javascript/ql/src/experimental/Security/CWE-090/Ldapjs.qll

Co-authored-by: Erik Krogh Kristensen <erik-krogh@github.com>

Author: dellalibera

javascript/ql/src/experimental/Security/CWE-090/Ldapjs.qll

@@ -42,9 +42,14 @@ module Ldapjs {
    * A filter used in a `search` operation against the LDAP server.
    */
   class LdapjsSearchFilter extends DataFlow::Node {
-    LdapjsSearchFilter() {
-      this = any(LdapjsSearchOptions options).getAPropertyWrite("filter").getRhs()
-    }
+    LdapjsSearchOptions options;
+
+    LdapjsSearchFilter() { this = options.getAPropertyWrite("filter").getRhs() }
+
+    /**
+     * Gets the LDAP query call that this filter is used in.
+     */
+    DataFlow::InvokeNode getQueryCall() { result = options.getQueryCall() }
   }
 
   /**