[autotest] Fix exception traceback in suite output due to printing None.
Formatting errors in logging code is hidden, so this didn't cause any
failures. Changing `None` to `0` so that it's a valid number to print.
BUG=None
TEST=No longer prints exception
Change-Id: I5e3541137aa8e8901b84bf0158617e485444a1d3
Reviewed-on: https://gerrit.chromium.org/gerrit/65184
Commit-Queue: Alex Miller <milleral@chromium.org>
Reviewed-by: Alex Miller <milleral@chromium.org>
Tested-by: Alex Miller <milleral@chromium.org>
1 file changed