[gnome-boxes] Add missing build dep

[Kalev Lember]

commit 29b09c888dc7139f39ee4566024e307baaba1cdd
Author: Kalev Lember <kalevlember at gmail.com>
Date:   Tue Aug 26 11:37:47 2014 +0200

    Add missing build dep

 gnome-boxes.spec |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/gnome-boxes.spec b/gnome-boxes.spec
index 4e6b2c1..580bd65 100644
--- a/gnome-boxes.spec
+++ b/gnome-boxes.spec
@@ -49,6 +49,7 @@ BuildRequires:	pkgconfig(glib-2.0) => 2.32
 BuildRequires:	pkgconfig(gobject-introspection-1.0) >= 0.9.6
 BuildRequires:	pkgconfig(gtk+-3.0) >= 3.9
 BuildRequires:	pkgconfig(gtk-vnc-2.0) >= 0.4.4
+BuildRequires:	pkgconfig(libarchive)
 BuildRequires:	pkgconfig(libvirt-gobject-1.0) >= 0.1.5
 BuildRequires:	pkgconfig(libvirt-gconfig-1.0) >= 0.1.5
 BuildRequires:	pkgconfig(libxml-2.0) >= 2.7.8