component/bt: bugfix for NULL pointer access when HCI CTLR to HOST flow control is...

diff --git a/components/bt/lib b/components/bt/lib
index 03dbf4cdff0ec988128a0765bc3f7f6aff1950bd..0f68ece75cd27b71def68b735e6a03db312a46c5 160000 (submodule)
--- a/components/bt/lib
+++ b/components/bt/lib
@@ -1 +1 @@
-Subproject commit 03dbf4cdff0ec988128a0765bc3f7f6aff1950bd
+Subproject commit 0f68ece75cd27b71def68b735e6a03db312a46c5