Fix cargo test. am: e007c37603 am: 8fbb0b8d06

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/ring/+/2841413

Change-Id: I351da21cea6697fe946052f31f948f539f5e392e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>