simplifie logic to not go with multiple level of callback for just getting the first entry in a hash.
simplifie logic to not go with multiple level of callback for just getting the first entry in a hash.

Backport from commit f7fd1f1c84a9355039b38725c820b675f6dafc20
on https://git.enlightenment.org/core/efl.git

gfriloux/eina,gfriloux/eina,gfriloux/eina