Fix format string use

copt.c: In function ‘writeoutf’:
copt.c:806:2: error: format not a string literal and no format arguments [-Werror=format-security]
  fprintf(fp, headstr);
...

1 files changed, 1 insertions, 1 deletions

diff --git a/ar/ar.c b/ar/ar.c
index 4e5cb0a..f808a3a 100644
--- a/ar/ar.c
+++ b/ar/ar.c
@@ -2036,7 +2036,7 @@ error_with_file (string, mapelt)
      struct mapelt *mapelt;
 {
   fprintf (stderr, "%s: ", program_name);
-  fprintf (stderr, string);
+  fprintf (stderr, "%s", string);
   if (mapelt->info.offset != 0)
     fprintf (stderr, "%s(%s)", archive, mapelt->info.name);
   else