eeze_net: fix a potentional memory leak case
Summary:
if net equals zero and device has allocated properly at the same time, memory leaks.
this patch fixes it.
Reviewers: Hermet, bu5hm4n, zmike
Reviewed By: Hermet
Subscribers: vtorri, cedric, reviewers, committers
Tags: efl
Differential Revision: https://phab.enlightenment.org/D12221