[SoupAuthDomainDigest] fix nc parsing
[SoupAuthDomainDigest] fix nc parsing

We were parsing it as decimal rather than hex, which meant the auth
would fail and return 401 again after 10 requests.

Noted by Chris Head,
https://bugzilla.gnome.org/show_bug.cgi?id=602898

jwendell/libsoup,Distrotech/libsoup,fanc999/libsoup,Distrotech/libsoup,Distrotech/libsoup,jwendell/libsoup,jwendell/libsoup,jwendell/libsoup,fanc999/libsoup,jwendell/libsoup,fanc999/libsoup,ahmedammar/platform_external_gst_libsoup,Distrotech/libsoup,fanc999/libsoup,fanc999/libsoup,Distrotech/libsoup,ahmedammar/platform_external_gst_libsoup,ahmedammar/platform_external_gst_libsoup