Updated 'core' to latest commit.

Signed-off-by: Roland Haeder <roland@mxchange.org>

diff --git a/core b/core
index b44905516036bb2bfa05090740a4f83696776938..daff0462a4ebcae895e5946acc0906fbd93618b8 160000 (submodule)
--- a/core
+++ b/core
@@ -1 +1 @@
-Subproject commit b44905516036bb2bfa05090740a4f83696776938
+Subproject commit daff0462a4ebcae895e5946acc0906fbd93618b8