Updated core.

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

diff --git a/core b/core
index 80d808f788a6b4712bc7a33abcfcc8bb432cbdf9..9a1a0915cfa5152eac399c17c41f6fcab081d743 160000 (submodule)
--- a/core
+++ b/core
@@ -1 +1 @@
-Subproject commit 80d808f788a6b4712bc7a33abcfcc8bb432cbdf9
+Subproject commit 9a1a0915cfa5152eac399c17c41f6fcab081d743