Updated 'core'.

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

diff --git a/core b/core
index be973533c0b839d64cdcbc2be19d887a42831766..867042ee4793d38bd778717192f4f6cd727b8e19 160000 (submodule)
--- a/core
+++ b/core
@@ -1 +1 @@
-Subproject commit be973533c0b839d64cdcbc2be19d887a42831766
+Subproject commit 867042ee4793d38bd778717192f4f6cd727b8e19