Fix walk example for new line_get_content API
Fix walk example for new line_get_content API

weynhamz/GNOME-libgit2-glib,weynhamz/GNOME-libgit2-glib,GNOME/libgit2-glib,weynhamz/GNOME-libgit2-glib,weynhamz/GNOME-libgit2-glib,chergert/libgit2-glib,chergert/libgit2-glib,GNOME/libgit2-glib,chergert/libgit2-glib