pidgin/pidgin

fix a use after free by making sure to reference an old smiley image if it is not null.
release-2.x.y
2020-05-14, Gary Kramlich
0ff0248b4928
fix a use after free by making sure to reference an old smiley image if it is not null.
For information on translating Pidgin, libpurple, and Finch, please see
our wiki page at https://developer.pidgin.im/wiki/TipsForTranslators