ebook: Remove duplicate free from array_to_stringlist helper (#625750)
ebook: Remove duplicate free from array_to_stringlist helper (#625750)

The helper function array_to_stringlist function tried to free the string
array despite it being freed by the caller as well.

Fixes: https://bugzilla.gnome.org/show_bug.cgi?id=625750

matzipan/evolution-data-server,matzipan/evolution-data-server,Distrotech/evolution-data-server,Distrotech/evolution-data-server,matzipan/evolution-data-server,gcampax/evolution-data-server,tintou/evolution-data-server,matzipan/evolution-data-server,Distrotech/evolution-data-server,matzipan/evolution-data-server,gcampax/evolution-data-server,tintou/evolution-data-server,tintou/evolution-data-server,gcampax/evolution-data-server,tintou/evolution-data-server,Distrotech/evolution-data-server,Distrotech/evolution-data-server,gcampax/evolution-data-server