Bug#1143760: libvhdi: FTBFS: FAIL test_library.sh (exit status: 1)

[Christopher Obbard]

Control: tags -1 + patch
Control: forwarded -1 
https://salsa.debian.org/pkg-security-team/libvhdi/-/merge_requests/2

I created a quick patch; it now builds fine for me on sid/amd64.