[automerger skipped] SurfaceComposerClient: add a range check in setAlpha am: f4bd36b72d am: 16724c2c8a -s ours

am skip reason: Merged-In I172321a4d3533e0506bad75a0a91e33fe921c2b7 with SHA-1 ff930b400c is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/22434167

Change-Id: I2305912376bdd7ca54ff87d0edbbb49a55a6c6ca
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>