Updates core.

Signed-off-by: Stéphane Jacob <sj@m4x.org>

diff --git a/core b/core
index 207cb95..feb45d1 160000 (submodule)
--- a/core
+++ b/core
@@ -1 +1 @@
-Subproject commit 207cb95c6810acc34682ef2105b13dddd938105e
+Subproject commit feb45d1d9fc152beff746c83048ff7704cc27ea2