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elm/genlist: check for item invalidation after setting item focus on click

Authored by zmike on Aug 21 2018, 7:26 AM.

Description

elm/genlist: check for item invalidation after setting item focus on click

Summary:
if the item is deleted during a focus callback then the remainder of this function
must be skipped in order to avoid crashing when attempting to access deallocated
memory

ref T7292

Reviewers: SanghyeonLee

Reviewed By: SanghyeonLee

Subscribers: cedric, reviewers, committers

Tags: efl: widgets

Maniphest Tasks: T7292

Differential Revision: https://phab.enlightenment.org/D6831