Merge "speech: Null-check service connection before usage" into udc-dev am: 671d962a am: 2b0fb04d

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23296601



Change-Id: Icaad46a9f273df1941f9195fe22b91e60aeaa0ce
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>