[EFL] Don't try to free user-provided list

[EFL] Don't try to free user-provided list
https://bugs.webkit.org/show_bug.cgi?id=68356

Reviewed by Antonio Gomes.

A coding-style cleanup revealed that we were using EINA_LIST_FREE in a
wrong manner. If we intended to free the data, we should call free()
(or whatever function is required to destroy it). However not only did
it use the wrong EFL api but it also introduced a change in behavior,
freeing user-provided data.

* ewk/ewk_frame.cpp:
(ewk_frame_feed_touch_event): do not free user-provided data.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@95656 268f45cc-cd09-0410-ab3c-d52691b4dbfc