Rebased version of https://gitlab.gnome.org/GNOME/gnome-shell-extensions/-/commit/cdaa837d48894737ca0b4e7d2dfb365119e53759
https://bugs.gentoo.org/831938

--- a/data/meson.build
+++ b/data/meson.build
@@ -1,5 +1,5 @@
 session_desktop = 'gnome-classic.desktop'
-i18n.merge_file('',
+i18n.merge_file(
   input:  session_desktop + '.in',
   output: session_desktop,
   po_dir: '../po',