Hook up the exit menu item.

[nageru] / bmusb

diff --git a/bmusb b/bmusb
index e7d3ce1cdb423c5ba33f098f97383f099055d621..4a275155fbd23690652c0478b12363d254f84e16 160000 (submodule)
--- a/bmusb
+++ b/bmusb
@@ -1 +1 @@
-Subproject commit e7d3ce1cdb423c5ba33f098f97383f099055d621
+Subproject commit 4a275155fbd23690652c0478b12363d254f84e16