Sync bmusb (got inadvertedly rewound earlier).

diff --git a/bmusb b/bmusb
index 6a012a41c5422092cdac1f18a9019f37c0b85368..e287f28087aef9cfd6aa47acd0d283bc177a9d70 160000 (submodule)
--- a/bmusb
+++ b/bmusb
@@ -1 +1 @@
-Subproject commit 6a012a41c5422092cdac1f18a9019f37c0b85368
+Subproject commit e287f28087aef9cfd6aa47acd0d283bc177a9d70