elm_font: Fixed resource leak in function elm_font_available_hash_add
elm_font: Fixed resource leak in function elm_font_available_hash_add

Summary: @Fix

Reviewers: raster, singh.amitesh, seoz, kimcinoo, Hermet

Reviewed By: Hermet

Differential Revision: https://phab.enlightenment.org/D1849

FlorentRevest/Elementary,tasn/elementary,tasn/elementary,rvandegrift/elementary,tasn/elementary,FlorentRevest/Elementary,tasn/elementary,FlorentRevest/Elementary,rvandegrift/elementary,rvandegrift/elementary,tasn/elementary,rvandegrift/elementary,FlorentRevest/Elementary