Ensure extras is a hash to remove need for rescues
Ensure extras is a hash to remove need for rescues

Instead of catching an error just make sure that `source["extras"]` is
present and is a hash then all access are safe.

Motejl/open-data-certificate,zoul/open-data-certificate,ahmadassaf/open-data-certificate,Motejl/open-data-certificate,zoul/open-data-certificate,zoul/open-data-certificate,Motejl/open-data-certificate,theodi/open-data-certificate,theodi/open-data-certificate,ahmadassaf/open-data-certificate,zoul/open-data-certificate,theodi/open-data-certificate,ahmadassaf/open-data-certificate,Motejl/open-data-certificate,ahmadassaf/open-data-certificate,theodi/open-data-certificate