gnulib: Update submodule to recent commit
diff --git a/gnulib b/gnulib
index b3791b2..ea58a72 160000
--- a/gnulib
+++ b/gnulib
@@ -1 +1 @@
-Subproject commit b3791b2bb9bdf03b2f99be5629d017a40382e1ee
+Subproject commit ea58a72d4db3c4729e51de2633845ee381dd00b6