Bug#1072963: jpeg-xl: Failing autopkgtests on non-amd64

[Jeremy Bícha]

Source: jpeg-xl
Version: 0.9.2-6
Severity: serious
Tags: experimental

jpeg-xl in experimental has autopkgtests that are failing on all
architectures except for amd64.

Specifically, the problem is that debian/libjxl-gdk-pixbuf.postinst
and debian/libjxl-gdk-pixbuf.postrm have hardcoded the amd64
architecture which means that libjxl-gdk-pixbuf is uninstallable on
architectures other than amd64.

https://ci.debian.net/packages/j/jpeg-xl/unstable/arm64/

https://salsa.debian.org/debian-phototools-team/libjxl/-/blob/debian/experimental/debian/libjxl-gdk-pixbuf.postinst

Thank you,
Jeremy Bícha