HDMICEC: Out of Bounds Write in sendMessage in HdmiCec.cpp am: a93bdd0578 am: e8fccd25c9

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/23486967

Change-Id: If3d3ff32c59f11364de6a01cb6145cf6c5163ee7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>