Updated 'core'

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

diff --git a/core b/core
index 993f346ece437f25fbdba2643f3011cbc1860611..1f1aab69c7ee3964dbcd99dba679e3a4fbcbcddb 160000 (submodule)
--- a/core
+++ b/core
@@ -1 +1 @@
-Subproject commit 993f346ece437f25fbdba2643f3011cbc1860611
+Subproject commit 1f1aab69c7ee3964dbcd99dba679e3a4fbcbcddb