[ModemManager] Add 'dia' buildreq for docs generation

[Daniel Williams]

commit 80873e3a8083fc4b092a77e01e0ea1fa6d277ea7
Author: Dan Williams <dcbw at redhat.com>
Date:   Wed May 15 19:48:54 2013 -0500

    Add 'dia' buildreq for docs generation

 ModemManager.spec |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
---
diff --git a/ModemManager.spec b/ModemManager.spec
index adfb149..14bac4c 100644
--- a/ModemManager.spec
+++ b/ModemManager.spec
@@ -29,8 +29,7 @@ BuildRequires: ppp = %{ppp_version}
 BuildRequires: ppp-devel = %{ppp_version}
 BuildRequires: automake autoconf intltool libtool
 BuildRequires: intltool
-# for xsltproc
-BuildRequires: libxslt
+BuildRequires: dia libxslt
 
 Patch0: buildsys-hates-openpty.patch