[gnome-boxes] meson: Look for spice-gtk vala bindings

[Felipe Borges <felipeborges src gnome org>]

commit 617168ed0872da59f92832592d3f959ed7e49eff
Author: Pavel Grunt <pavelgrunt gmail com>
Date:   Sat Jan 6 17:06:11 2018 +0100

    meson: Look for spice-gtk vala bindings
    
    https://bugzilla.gnome.org/show_bug.cgi?id=791421

 src/meson.build |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/src/meson.build b/src/meson.build
index bc7fdbb..39ce9c7 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -147,7 +147,8 @@ dependencies = [
   valac.find_library ('gio-2.0-workaround', dirs: vapi_dir),
   valac.find_library ('linux'),
   valac.find_library ('posix'),
-  valac.find_library ('rest-0.7')
+  valac.find_library ('rest-0.7'),
+  valac.find_library ('spice-client-gtk-3.0'),
 ]
 
 if govirt_dep.found()