autoupdate_EndToEnd: Fix typo in OmahaDevserver.

The OmahaDevserver initialization code had a typo that was hidding the
actual error raised during start_devserver(). This patch fixes the typo.

BUG=chromium:409357
TEST=`pylint -d W0311 autoupdate_EndToEndTest.py -f parseable -i y -r n` doesn't show this error anymore.

Change-Id: I12533ec6f8561644dd380400e7614b378af6f8ef
Reviewed-on: https://chromium-review.googlesource.com/215980
Tested-by: Alex Deymo <deymo@chromium.org>
Reviewed-by: Chris Sosa <sosa@chromium.org>
Commit-Queue: Alex Deymo <deymo@chromium.org>
1 file changed