Merge "AppOpsCallback: do not log error on null package name" into qt-dev

        case OP_CHANGED_TRANSACTION: {

            CHECK_INTERFACE(IAppOpsCallback, data, reply);

            int32_t op = data.readInt32();

            String16 packageName = data.readString16();

            String16 packageName;

            (void)data.readString16(&packageName);

            opChanged(op, packageName);

            reply->writeNoException();

            return NO_ERROR;