Commit 119ee4d773 ("tools/libxc: Tolerate specific zero-content records
in migration v2 streams") meant tolerate those, but failed to set rc
accordingly.
Signed-off-by: Jan Beulich <jbeulich@suse.com> Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com> Reviewed-by: Wei Liu <wei.liu2@citrix.com>