[pango-language] Fix small leak
[pango-language] Fix small leak

Reported by Tommi Rantala.

bratsche/pango,kari-lentz/alpha-pango,Distrotech/pango,OpenInkpot-archive/iplinux-pango1.0,OpenInkpot-archive/iplinux-pango1.0,zsx/pango,danny-ku/pango,danny-ku/pango,kari-lentz/alpha-pango,zsx/pango,bratsche/pango,kari-lentz/alpha-pango,OpenInkpot-archive/iplinux-pango1.0,zsx/pango,Distrotech/pango,kari-lentz/alpha-pango,danny-ku/pango,zsx/pango,bratsche/pango,Distrotech/pango,bratsche/pango