Merge "[SF] Don't crash if HWC returns an unknown config" into rvc-dev

        *outVsyncPeriod = static_cast<nsecs_t>(vsyncPeriodNanos);

    } else {

        // Get the default vsync period

        HWConfigId configId = 0;

        auto intError_2_1 = mComposer.getActiveConfig(mId, &configId);

        error = static_cast<Error>(intError_2_1);

        if (error == Error::NONE) {

            auto config = mConfigs.at(configId);

            *outVsyncPeriod = config->getVsyncPeriod();

        std::shared_ptr<const Display::Config> config;

        error = getActiveConfig(&config);

        if (error != Error::NONE) {

            return error;

        }

        if (!config) {

            // HWC has updated the display modes and hasn't notified us yet.

            return Error::BAD_CONFIG;

        }

        *outVsyncPeriod = config->getVsyncPeriod();

    }

    return error;