wl_text_input: initializes global handle after destroying.
wl_text_input: initializes global handle after destroying.

Summary: variable for handle should be initialized.

Test Plan: N/A

Reviewers: zmike, devilhorns

Reviewed By: devilhorns

Subscribers: cedric

Differential Revision: https://phab.enlightenment.org/D3013

rvandegrift/e,tizenorg/platform.upstream.enlightenment,rvandegrift/e,tasn/enlightenment,rvandegrift/e,tizenorg/platform.upstream.enlightenment,tasn/enlightenment,tizenorg/platform.upstream.enlightenment,tasn/enlightenment