build: update gnulib to latest for warning fixes

* gnulib: Update submodule to latest.
* src/grep.c (printf_errno): Reflect gnulib's renaming: change
_GL_ATTRIBUTE_FORMAT_PRINTF to
_GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD

1 files changed, 1 insertions, 1 deletions

diff --git a/src/grep.c b/src/grep.c
index cc2b962f..eb7c60e7 100644
--- a/src/grep.c
+++ b/src/grep.c
@@ -447,7 +447,7 @@ fputs_errno (char const *s)
     stdout_errno = errno;
 }
 
-static void _GL_ATTRIBUTE_FORMAT_PRINTF (1, 2)
+static void _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD (1, 2)
 printf_errno (char const *format, ...)
 {
   va_list ap;