[automerger] libbinder: readCString: no ubsan sub-overflow am: d0d4b584fc am: a7134ad559 am: 7e71b6ee21 am: 2537a8b5b6 am: 85c1e41520 am: 6658f2faec am: a9d88cd608 am: 9d5523b8f5 am: cf43794b93 am: c838b5ddfd
am: 7ae3b87b0d

Change-Id: I938b8035892553dc57a5cc83155293b69f27c433