allow completely empty configuration #49
Merged
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i have a configuration test where i test that a completely empty configuration is accepted. this test started failing when i updated vendors: https://github.com/FriendsOfSymfony/FOSHttpCacheBundle/blob/187362f0377bf272473fd3bbf113195939ebab82/tests/Unit/DependencyInjection/ConfigurationTest.php#L33
i investigated what the configuration is, and instead of an array there is
false
in the array. with this change, the test works for me.i don't know exactly where this is coming from or if its a behaviour change for empty configuration in symfony.