refresh libusual

diff --git a/lib b/lib
index 7abebdff3422e4a7d0baaa57eaa14205dba14e39..1a1189f36377d08e95d898b978aba4bcf7494848 160000 (submodule)
--- a/lib
+++ b/lib
@@ -1 +1 @@
-Subproject commit 7abebdff3422e4a7d0baaa57eaa14205dba14e39
+Subproject commit 1a1189f36377d08e95d898b978aba4bcf7494848