Merge "Bug fix for properly clearing the last open call pointer" into udc-qpr-dev am: 8433b368

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/24816581



Change-Id: I97decb443856131e427a15d8f977a46c6d3bcd11
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>