Setup Error with sample data on Magento 2.1 EE

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Hello,

I'm unable to setup sample data under Magento EE 2.1.
`bin/magento sampledata:deploy` went well, but when running `bin/magento setup:upgrade` :

```
...
Module 'Magento_Eway':
Module 'Magento_Fedex':
Module 'Magento_TargetRule':
Module 'Magento_GiftCardAccount':
Module 'Magento_GiftCardImportExport':
Module 'Magento_Weee':
Module 'Magento_GiftRegistry':
Module 'Magento_GiftMessage':
Module 'Magento_GiftMessageStaging':
Module 'Magento_CatalogStaging':
Module 'Magento_GiftRegistrySampleData':
Installing data... PHP Fatal error: Uncaught Error: Call to a member function getData() on boolean in /var/www/magento_deploy/releases/20160812150332/src/vendor/magento/module-gift-registry-sample-data/Model/GiftRegistry.php:192
Stack trace:
#0 /var/www/magento_deploy/releases/20160812150332/src/vendor/magento/module-gift-registry-sample-data/Model/GiftRegistry.php(144): Magento\GiftRegistrySampleData\Model\GiftRegistry->generateData(Array)
#1 /var/www/magento_deploy/releases/20160812150332/src/vendor/magento/module-gift-registry-sample-data/Setup/Installer.php(30): Magento\GiftRegistrySampleData\Model\GiftRegistry->install(Array)
#2 [internal function]: Magento\GiftRegistrySampleData\Setup\Installer->install()
#3 /var/www/magento_deploy/releases/20160812150332/src/vendor/magento/framework/App/State.php(171): call_user_func_array(Array, Array)
#4 /var/www/magento_deploy/releases/20160812150332/src/vendor/magento/framework/Setup/SampleData/Executor.php(50): Magento\Framework\App\State->emulateAreaCode('setup', Array)
#5 /var/www/magento_deploy/r in /var/www/magento_deploy/releases/20160812150332/src/vendor/magento/module-gift-registry-sample-data/Model/GiftRegistry.php on line 192
```

It's working fine under Magento 2.1 CE.

Thanks in advance,
Marc

Reproduce the failure with `bin/magento sampledata:deploy` followed by `bin/magento setup:upgrade` on Magento EE 2.1. Start in `vendor/magento/module-gift-registry-sample-data/Model/GiftRegistry.php`, especially lines 144 and 192, and compare the behavior with Magento 2.1 CE. Done means sample-data installation completes without the reported `getData()` fatal error.

Written by the indexing model from the issue text.