Use report_fail(...) instead of report(0/false, ...)

Whitespace is kept consistent with the rest of the file.

Signed-off-by: Janis Schoetterl-Glausch <scgl@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Message-Id: <20211005090921.1816373-5-scgl@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>