cros: Fix login crash when determining if PIN is supported.

Bug: 847040
Change-Id: Id32b31abdfa1dff8e8229bfb4eaa610d782d4789
Reviewed-on: https://chromium-review.googlesource.com/1077017
Reviewed-by: Achuith Bhandarkar <achuith@chromium.org>
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Commit-Queue: Jacob Dufault <jdufault@chromium.org>
Cr-Commit-Position: refs/heads/master@{#562611}
1 file changed