Merge "Fatal if RpcServer root object is set after it's running" into main

void RpcServer::setRootObject(const sp<IBinder>& binder) {

    RpcMutexLockGuard _l(mLock);

    LOG_ALWAYS_FATAL_IF(mJoinThreadRunning, "Cannot set root object while running");

    mRootObjectFactory = nullptr;

    mRootObjectWeak = mRootObject = binder;

}

void RpcServer::setRootObjectWeak(const wp<IBinder>& binder) {

    RpcMutexLockGuard _l(mLock);

    LOG_ALWAYS_FATAL_IF(mJoinThreadRunning, "Cannot set root object while running");

    mRootObject.clear();

    mRootObjectFactory = nullptr;

    mRootObjectWeak = binder;