Merge "Don't throw if hint session death link doesn't exist" into main

import java.io.PrintWriter;

import java.util.Arrays;

import java.util.List;

import java.util.NoSuchElementException;

import java.util.Objects;

/** An hint service implementation that runs in System Server process. */

                if (mHalSessionPtr == 0) return;

                mNativeWrapper.halCloseHintSession(mHalSessionPtr);

                mHalSessionPtr = 0;

                try {

                    mToken.unlinkToDeath(this, 0);

                } catch (NoSuchElementException ignored) {

                    Slogf.d(TAG, "Death link does not exist for session with UID " + mUid);

                }

            }

            synchronized (mLock) {

                ArrayMap<IBinder, ArraySet<AppHintSession>> tokenMap = mActiveSessions.get(mUid);