Updated 'core'.

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

diff --git a/core b/core
index f2d79735f329e3dafe347a56686122b3b5bdbea9..4648ede712da5257e96eb4d88f0cc01cb2890740 160000 (submodule)
--- a/core
+++ b/core
@@ -1 +1 @@
-Subproject commit f2d79735f329e3dafe347a56686122b3b5bdbea9
+Subproject commit 4648ede712da5257e96eb4d88f0cc01cb2890740