[PATCH] build: update gnulib submodule to latest

[Pádraig Brady]

* gnulib: Update to latest.
* src/dd.c: Avoid error macro redefinition.
---
 gnulib   | 2 +-
 src/dd.c | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/gnulib b/gnulib
index e2bd71038..4f7dce3fc 160000
--- a/gnulib
+++ b/gnulib
@@ -1 +1 @@
-Subproject commit e2bd71038406e06eeedb4139cb61f3b43aeb3b2f
+Subproject commit 4f7dce3fc20179ed6c24b7d84b82a99b6f410fef
diff --git a/src/dd.c b/src/dd.c
index 2808a79ab..f41966969 100644
--- a/src/dd.c
+++ b/src/dd.c
@@ -17,6 +17,7 @@
 /* Written by Paul Rubin, David MacKenzie, and Stuart Kemp. */
 
 #include <config.h>
+#define _GL_NO_INLINE_ERROR  /* Avoid gnulib's error macro. */
 
 #include <sys/types.h>
 #include <signal.h>
-- 
2.40.1