Fixes two warnings in `eval {}`.
Fixes the following two warnings:
- Can't use string ("Glib::String") as an ARRAY ref while "strict refs" in use at /usr/share/perl5/site_perl/Gtk3.pm line 2329.
- Can't use string ("1") as an ARRAY ref while "strict refs" in use at /usr/share/perl5/site_perl/Gtk3.pm line 2364.
Edited by Daniel Șuteu