[doxygen] add BR on desktop-file-install

[Than Ngo]

commit 52a4647f1c6c8d8faf08f386724a00e273f58fb1
Author: Than Ngo <than at redhat.com>
Date:   Wed Jan 18 16:41:02 2012 +0100

    add BR on desktop-file-install

 doxygen.spec |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/doxygen.spec b/doxygen.spec
index d22bfe7..e1dcf21 100644
--- a/doxygen.spec
+++ b/doxygen.spec
@@ -23,6 +23,7 @@ BuildRequires: ghostscript
 BuildRequires: gettext
 BuildRequires: flex
 BuildRequires: bison
+BuildRequires: desktop-file-utils
 
 %description
 Doxygen can generate an online class browser (in HTML) and/or a