[gnome-contacts] Add missing build dep

[Kalev Lember]

commit 209590748cf1e3708c8192a2cb02e99b71e7a210
Author: Kalev Lember <kalevlember at gmail.com>
Date:   Wed Sep 17 13:09:12 2014 +0200

    Add missing build dep

 gnome-contacts.spec |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/gnome-contacts.spec b/gnome-contacts.spec
index 095ec86..9071d8d 100644
--- a/gnome-contacts.spec
+++ b/gnome-contacts.spec
@@ -21,6 +21,7 @@ BuildRequires:  libnotify-devel
 BuildRequires:  gnome-desktop3-devel
 BuildRequires:  desktop-file-utils
 BuildRequires:  cheese-libs-devel
+BuildRequires:  vala-tools
 
 Requires:       gtk3%{?_isa} >= %{gtk3_version}