KVM test: scan_results.py: fix handling of empty result list

If there are no test results, max() tries to operate on an empty sequence
and throws an exception.

Signed-off-by: Michael Goldish <mgoldish@redhat.com>


git-svn-id: http://test.kernel.org/svn/autotest/trunk@4657 592f7852-d20e-0410-864c-8624ca9c26a4
1 file changed