Quagga: Fix some more compile warnings

The debian build process under Jessie has a 'newer' gcc
compiler that is more stringent on warnings returned.
This commit cleans up some more warnings returned.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>

1 files changed, 7 insertions, 1 deletions

diff --git a/vtysh/vtysh_main.c b/vtysh/vtysh_main.c
index 5d3a61e14d..e160e3360b 100644
--- a/vtysh/vtysh_main.c
+++ b/vtysh/vtysh_main.c
@@ -336,7 +336,13 @@ main (int argc, char **argv, char **env)
 
   /* Ignore error messages */
   if (no_error)
-    freopen("/dev/null", "w", stdout);
+    {
+      if (freopen("/dev/null", "w", stdout) == NULL)
+	{
+	  fprintf(stderr, "Exiting: Failed to duplicate stdout with -n option");
+	  exit(1);
+	}
+    }
 
   /* Make sure we pass authentication before proceeding. */
   vtysh_auth ();