Used fixed 'core'.

Signed-off-by: Roland Häder <haeder@hmmdeutschland.de>

diff --git a/core b/core
index 5fe296bdcee126e1dd0ef0053b9d7f7a8da81d34..d5cbb96707ecc0630c05da880205f2c7f26e623b 160000 (submodule)
--- a/core
+++ b/core
@@ -1 +1 @@
-Subproject commit 5fe296bdcee126e1dd0ef0053b9d7f7a8da81d34
+Subproject commit d5cbb96707ecc0630c05da880205f2c7f26e623b