Security update for gthumb
This update for gthumb fixes the following issues:
Security issue fixed:
- CVE-2018-18718: Fixed a double-free in add_themes_from_dir function from dlg-contact-sheet.c (boo#1113749)
- Submitted by Dan Čermák (dancermak)
Fixed bugs
bnc#1113749
VUL-1: CVE-2018-18718: gthumb: double-free in the add_themes_from_dir method