Fix #elif in crrev.com/c/1949846
Fix #elif in crrev.com/c/1949846

I was editing the patch in gerrit and looks like it undone !defined
change and I landed wrong version.

Bug: chromium:1030261
Change-Id: Ib645839bac5450fe55ecd9f3a38155022b7f6c13
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/1951624
Reviewed-by: Mark Mentovai <f1b5a91d4d6ad523f2610114591c007e75d15084@chromium.org>
Commit-Queue: Vitaly Buka <30899b7d84d75ec2c2b981c63ebe46fea5c02e99@chromium.org>

chromium/crashpad,chromium/crashpad,chromium/crashpad