Fix cfg-if/METADATA am: e27244cbf7 am: f5549b9045 am: 3a66ea74ec am: c0039cf166

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/cfg-if/+/1414003

Change-Id: I67852cb2c04e78036ffd7ae0c5cc45d616b4dcef