mkhtml2: handle deprecated without description keywords for devhelp2
If there is no value, split() returns 1-element list. See https://bugzilla.gnome.org/show_bug.cgi?id=788911
parent
78fc71ab
If there is no value, split() returns 1-element list. See https://bugzilla.gnome.org/show_bug.cgi?id=788911