libgsystem: Update

diff --git a/src/libgsystem b/src/libgsystem
index 9f0342c586f8084991ccd7b888dba720bc929be8..a6f48a9720aa7b01b8abee1fc0eb78230b273485 160000 (submodule)
--- a/src/libgsystem
+++ b/src/libgsystem
@@ -1 +1 @@
-Subproject commit 9f0342c586f8084991ccd7b888dba720bc929be8
+Subproject commit a6f48a9720aa7b01b8abee1fc0eb78230b273485