net/vino: Fix for DragonFly

Add socket.h (if available) to a header using sockaddr structure, fixes
build for DragonFly.

net/vino/distinfo

@@ -1,4 +1,4 @@
-$NetBSD: distinfo,v 1.10 2011/05/04 17:46:22 drochner Exp $
+$NetBSD: distinfo,v 1.11 2011/11/26 17:14:54 marino Exp $
 
 SHA1 (vino-2.28.3.tar.bz2) = 5ffd9d9b3d9ecfd028468e1e889006929e5590af
 RMD160 (vino-2.28.3.tar.bz2) = 885bdcab1f2993bbd9a74e78ede93f58a93d4eee
@@ -6,3 +6,4 @@ Size (vino-2.28.3.tar.bz2) = 848908 bytes
 SHA1 (patch-aa) = a79f5d6cae5377c9029e5f1dfaf9b76f6da7e0a2
 SHA1 (patch-ab) = 81efc17f2d1275ea6131ffd44bdb8f50d0cf464e
 SHA1 (patch-ac) = 69bf929df606e106bf9401fc3a5b2a0fc241b8e7
+SHA1 (patch-ad) = 0e1b226e8c5ac5f9e3d3c7270b9a19a2314ef737

net/vino/patches/patch-ad

@@ -0,0 +1,15 @@
+$NetBSD: patch-ad,v 1.1 2011/11/26 17:14:54 marino Exp $
+
+--- server/libvncserver/rfb/rfb.h.orig	2011-05-02 16:07:11.000000000 +0000
++++ server/libvncserver/rfb/rfb.h
+@@ -45,6 +45,10 @@ extern "C"
+ #include <sys/types.h>
+ #endif
+ 
++#ifdef HAVE_SYS_SOCKET_H
++#include <sys/socket.h>
++#endif
++
+ #ifndef HAVE_NETINET_IN_H
+ #include <netinet/in.h>
+ #endif