backport upstream patch to fix digikam-kde4 with newer lensfun.

diff from rsadowski with minor tweak in patch comment by me.

graphics/digikam-kde4/Makefile

@@ -1,4 +1,4 @@
-# $OpenBSD: Makefile,v 1.22 2016/11/27 17:37:35 kirby Exp $
+# $OpenBSD: Makefile,v 1.23 2017/02/02 12:57:28 sthen Exp $
 
 COMMENT-kipi =		KDE image plugins collection
 COMMENT-main =		KDE photo management utility
@@ -16,6 +16,7 @@ PKGNAME-kipi =		kipi-plugins-${VERSION}
 PKGNAME-main =		${PKGNAME}
 PKGNAME-mediawiki =	libmediawiki-1.0.0
 
+REVISION-main =		0
 REVISION-kipi =		1
 REVISION-mediawiki =	4
 

graphics/digikam-kde4/patches/patch-core_libs_dimg_filters_lens_lensfuniface_h

@@ -0,0 +1,21 @@
+$OpenBSD: patch-core_libs_dimg_filters_lens_lensfuniface_h,v 1.1 2017/02/02 12:57:28 sthen Exp $
+
+From 0f159981176faa6da701f112bfe557b79804d468 Mon Sep 17 00:00:00 2001
+From: Gilles Caulier <caulier.gilles@gmail.com>
+Date: Mon, 14 Dec 2015 22:40:55 +0059
+Subject: fix compilation with Lensfun 0.3.2 It still compatible with older
+ lensfun releases. BUGS: 356672 FIXED-IN: 5.0.0
+
+--- core/libs/dimg/filters/lens/lensfuniface.h.orig	Wed Feb  1 15:09:45 2017
++++ core/libs/dimg/filters/lens/lensfuniface.h	Wed Feb  1 15:09:56 2017
+@@ -24,10 +24,7 @@
+ 
+ // Lib LensFun includes
+ 
+-extern "C"
+-{
+ #include <lensfun.h>
+-}
+ 
+ // local includes
+