Update liblibc

diff --git a/src/liblibc b/src/liblibc
index a7e78a78e17c8776d7780008ccb3ce541ec64ae9..b6d23ed45d72918239c0bfac11dc547895e59b81 160000 (submodule)
--- a/src/liblibc
+++ b/src/liblibc
@@ -1 +1 @@
-Subproject commit a7e78a78e17c8776d7780008ccb3ce541ec64ae9
+Subproject commit b6d23ed45d72918239c0bfac11dc547895e59b81