cor: Add a missing header when building with GCC 7 (and OE rocko)

recipes-nemomobile/cor/cor/0002-Add-a-missing-header-include.patch

+From b4c1f3a6509a51275054f77de5fd10d1bbecb6ad Mon Sep 17 00:00:00 2001
+From: Florent Revest <revestflo@gmail.com>
+Date: Sat, 21 Oct 2017 21:32:54 +0200
+Subject: [PATCH] Add a missing header include
+
+---
+ include/cor/util.hpp | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/include/cor/util.hpp b/include/cor/util.hpp
+index 153c496..f339ce1 100644
+--- a/include/cor/util.hpp
++++ b/include/cor/util.hpp
+@@ -2,7 +2,7 @@
+ #define _COR_UTIL_HPP_
+ 
+ #include <cor/error.hpp>
+-
++#include <functional>
+ #include <unistd.h>
+ 
+ #include <vector>
+-- 
+2.14.2
+

recipes-nemomobile/cor/cor_git.bb

@@ -4,7 +4,8 @@ LICENSE = "LGPL-2.1+"
 LIC_FILES_CHKSUM = "file://COPYING;md5=d2c621b4dd653efb7cbad641e0a30c59"
 
 SRC_URI = "git://git.merproject.org/mer-core/cor.git;protocol=https \
-           file://0001-Fix-error-with-GCC-6.patch"
+           file://0001-Fix-error-with-GCC-6.patch \
+           file://0002-Add-a-missing-header-include.patch"
 SRCREV = "52362ca66838694bbfa32071a1c14e1cb0cab1eb"
 PR = "r1"
 PV = "+git${SRCPV}"