fuse: Update to 2.9.4

Change-Id: I0877c624531286f47da29a7ab16c7ff3cfac0090
diff --git a/fuse/fuse_i.h b/fuse/fuse_i.h
index 78f1467..fa37156 100644
--- a/fuse/fuse_i.h
+++ b/fuse/fuse_i.h
@@ -106,6 +106,8 @@
 					size_t op_size, void *userdata);
 
 void fuse_kern_unmount_compat22(const char *mountpoint);
+int fuse_chan_clearfd(struct fuse_chan *ch);
+
 void fuse_kern_unmount(const char *mountpoint, int fd);
 int fuse_kern_mount(const char *mountpoint, struct fuse_args *args);