Merge "Camera: Don't crash when the device has no vendor tags." into nyc-dev

        ALOGE("%s: camera hardware module doesn't exist", __FUNCTION__);

        return STATUS_ERROR(ERROR_DISCONNECTED, "Camera subsystem not available");

    }

    *desc = *(VendorTagDescriptor::getGlobalVendorTagDescriptor().get());

    sp<VendorTagDescriptor> globalDescriptor = VendorTagDescriptor::getGlobalVendorTagDescriptor();

    if (globalDescriptor != nullptr) {

        *desc = *(globalDescriptor.get());

    }

    return Status::ok();

}