msgpack-c: Update to latest and fix build with gcc8

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>

meta-oe/recipes-devtools/msgpack/msgpack-c/0001-Fix-Werror-class-memaccess.patch

@@ -0,0 +1,35 @@
+From a05d92ae85024d0648f69f95307a1d3e8e51109c Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Sun, 1 Apr 2018 19:55:38 -0700
+Subject: [PATCH] Fix -Werror=class-memaccess
+
+Casting to void* make gcc happy since its upset about
+object types and rightly so
+
+Fixes
+
+'void* memcpy(void*, const void*, size_t)' copying an object of non-trivial type 'struct msgpack::v2::object' from an array of 'const msgpack_object' {aka 'const struct msgpack_object'} [-Werror=class-memaccess]
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+Upstream-Status: Submitted [https://github.com/msgpack/msgpack-c/pull/659]
+
+ include/msgpack/v1/object.hpp | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/include/msgpack/v1/object.hpp b/include/msgpack/v1/object.hpp
+index 64da8c53..9721f705 100644
+--- a/include/msgpack/v1/object.hpp
++++ b/include/msgpack/v1/object.hpp
+@@ -661,7 +661,7 @@ inline object::object(const msgpack_object& o)
+ inline void operator<< (msgpack::object& o, const msgpack_object& v)
+ {
+     // FIXME beter way?
+-    std::memcpy(&o, &v, sizeof(v));
++    std::memcpy(static_cast<void*>(&o), &v, sizeof(v));
+ }
+ 
+ inline object::operator msgpack_object() const
+-- 
+2.16.3
+

meta-oe/recipes-devtools/msgpack/msgpack-c_2.1.5.bb

@@ -9,9 +9,10 @@ LIC_FILES_CHKSUM = "file://NOTICE;md5=7a858c074723608e08614061dc044352 \
 
 PV .= "+git${SRCPV}"
 
-SRCREV = "7a98138f27f27290e680bf8fbf1f8d1b089bf138"
+SRCREV = "208595b2620cf6260ce3d6d4cf8543f13b206449"
 
 SRC_URI = "git://github.com/msgpack/msgpack-c \
+           file://0001-Fix-Werror-class-memaccess.patch \
            "
 
 inherit cmake pkgconfig