Updated 'core'.

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

diff --git a/core b/core
index a0551c30b2e11aadba3f0513ef67c36ca7e60552..867042ee4793d38bd778717192f4f6cd727b8e19 160000 (submodule)
--- a/core
+++ b/core
@@ -1 +1 @@
-Subproject commit a0551c30b2e11aadba3f0513ef67c36ca7e60552
+Subproject commit 867042ee4793d38bd778717192f4f6cd727b8e19