Include errno.h in utf.c.
Include errno.h in utf.c.

0intro/wmii,bwhmather/wmii,0intro/wmii,sunaku/wmii,bwhmather/wmii,bwhmather/wmii,bwhmather/wmii,0intro/wmii,bwhmather/wmii,sunaku/wmii,sunaku/wmii,sunaku/wmii,sunaku/wmii,0intro/wmii