Merge pull request #467 from pkg/bug/missing-id-passthru-on-statfs

Missing ID passthru on statfs
diff --git a/server_statvfs_impl.go b/server_statvfs_impl.go
index 2d467d1..94b6d83 100644
--- a/server_statvfs_impl.go
+++ b/server_statvfs_impl.go
@@ -14,6 +14,7 @@
 	if err != nil {
 		return statusFromError(p.ID, err)
 	}
+	retPkt.ID = p.ID
 
 	return retPkt
 }