Fix open-tag-p of xml-mode (also affects to JSX with js-mode).
Fix open-tag-p of xml-mode (also affects to JSX with js-mode).

snmsts/lem,cxxxr/lem,snmsts/lem,cxxxr/lem,snmsts/lem,cxxxr/lem,cxxxr/lem,snmsts/lem