update beechat.

diff --git a/mod/beechat b/mod/beechat
index ca9e77c5dc802efb452a22e95441f8c9f0c6892d..6e6f43a5b7b89c5f1091158bbb19fec20eb1c075 160000 (submodule)
--- a/mod/beechat
+++ b/mod/beechat
@@ -1 +1 @@
-Subproject commit ca9e77c5dc802efb452a22e95441f8c9f0c6892d
+Subproject commit 6e6f43a5b7b89c5f1091158bbb19fec20eb1c075