Updated 'core'.

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

diff --git a/core b/core
index 940994747eea52b7de56abfffca5b2c33ae9b9dd..e3c9a9ab3fc3f5d6a11b5af02d89cdba472d7ab8 160000 (submodule)
--- a/core
+++ b/core
@@ -1 +1 @@
-Subproject commit 940994747eea52b7de56abfffca5b2c33ae9b9dd
+Subproject commit e3c9a9ab3fc3f5d6a11b5af02d89cdba472d7ab8