dev_io: Initialize drop_time to zero

Since drop_time will be used by ATLOG and timespec_is_zero for early
return check, we should initialize it to zero.

BUG=b:170096536
TEST=scan-build make

Change-Id: I15133aa470c243e3d947747c6bccf8b0f3d8a27d
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/adhd/+/2452196
Tested-by: Chih-Yang Hsia <paulhsia@chromium.org>
Commit-Queue: Chih-Yang Hsia <paulhsia@chromium.org>
Reviewed-by: Yu-Hsuan Hsu <yuhsuan@chromium.org>
1 file changed