ecore: do not rely on implicit rules for memory lifecycle during test.
Summary:
alloca force the memory to be accessible for the entire duration of the
scope of the function it is called from. This will garantee that the
memory pointer are not recycled under our feet before we check them.
Reviewers: zmike
Reviewed By: zmike
Subscribers: reviewers, committers
Tags: efl
Maniphest Tasks: T8020
Differential Revision: https://phab.enlightenment.org/D9127