(mface__realize): Set rfont->layouter to Mnil. (mface__for_chars): Fix handling of layouter.
(mface__realize): Set rfont->layouter to Mnil.
(mface__for_chars): Fix handling of layouter.

xmirror/m17n-lib,xmirror/m17n-lib,xmirror/m17n-lib,xmirror/m17n-lib