[gnutls] added gperf which is required to apply patch

[Nikos Mavrogiannopoulos]

commit fc9e03c537ca23791f28dcb36730bfe44918f8f9
Author: Nikos Mavrogiannopoulos <nmav at redhat.com>
Date:   Mon May 5 13:58:41 2014 +0200

    added gperf which is required to apply patch

 gnutls.spec |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/gnutls.spec b/gnutls.spec
index 435936a..16a1376 100644
--- a/gnutls.spec
+++ b/gnutls.spec
@@ -14,6 +14,7 @@ BuildRequires: autogen-libopts-devel >= 5.18 autogen
 BuildRequires: nettle-devel >= 2.7.1
 BuildRequires: trousers-devel >= 0.3.11.2
 BuildRequires: libidn-devel
+BuildRequires: gperf
 %if %{with dane}
 BuildRequires: unbound-devel unbound-libs
 %endif