Fix set_default_icon_list() ownership transfer bug
Fix set_default_icon_list() ownership transfer bug

Ownership of the GList is transferred in this call, so a copy should
be passed instead.  This will be fixed in a future version of Vala.

https://mail.gnome.org/archives/vala-list/2014-August/msg00022.html

robol/geary,martinra/geary,glebihan/geary,AtticHacker/geary,glebihan/geary,githubnemo/geary,emersion/geary,AtticHacker/geary,tshikaboom/geary,aatishnn/geary,emersion/geary,githubnemo/geary,tshikaboom/geary,robol/geary,aatishnn/geary,AtticHacker/geary,tshikaboom/geary,mjog/geary,glebihan/geary,jimbonator/geary,martinra/geary,aatishnn/geary,jimbonator/geary,geekvigilante/geary,martinra/geary,githubnemo/geary,emersion/geary,mjog/geary,robol/geary,jimbonator/geary,mjog/geary