Update lib submodule

diff --git a/rpp-lib b/rpp-lib
index b0402226674d0c3b2b21aff34268e39a5f10c329..b9c14221d9d95c415ea02c0ba34dbf87d90ddbaf 160000 (submodule)
--- a/rpp-lib
+++ b/rpp-lib
@@ -1 +1 @@
-Subproject commit b0402226674d0c3b2b21aff34268e39a5f10c329
+Subproject commit b9c14221d9d95c415ea02c0ba34dbf87d90ddbaf