gnulib: update

diff --git a/gnulib b/gnulib
index d245e6ddd6ab2624d0d83acd8f111454f984f50f..0dbbe3f55352241d290403577dfebed802d6fd9a 160000 (submodule)
--- a/gnulib
+++ b/gnulib
@@ -1 +1 @@
-Subproject commit d245e6ddd6ab2624d0d83acd8f111454f984f50f
+Subproject commit 0dbbe3f55352241d290403577dfebed802d6fd9a