[E-devel] [patch] elc_multibuttonentry - bugfix early retrived text replacement

[Hyoyoung C. <hyo...@gm...>]

Dear developers

I made a patch about elc_multibuttonentry.
At _add_button_item, elc_multibuttonentry remove too early its entry.
After that, sometimes getting entry text is failed or returns wrong text.
It adds strdup and free pair for preventing the bug.

Thanks