[PATCH v2] sim: fix a warning in dv-sockser.c at connected_p()

[Bernd Edlinger <bernd.edlinger@hotmail.de>]

In some O/S e.g. windows there is a warning here about the
unused variable flags which triggers a -Werror build failure.

Fix that by making the variable declaration optional.
---
 sim/common/dv-sockser.c | 22 ++++++++++++----------
 1 file changed, 12 insertions(+), 10 deletions(-)

v2: moved the variable declaration inside the #if block

diff --git a/sim/common/dv-sockser.c b/sim/common/dv-sockser.c
index db81233e25b..8f7425658a9 100644
--- a/sim/common/dv-sockser.c
+++ b/sim/common/dv-sockser.c
@@ -218,7 +218,7 @@ sim_install_dv_sockser (SIM_DESC sd)
 static int
 connected_p (SIM_DESC sd)
 {
-  int numfds,flags;
+  int numfds;
   struct timeval tv;
   fd_set readfds;
   struct sockaddr sockaddr;
@@ -254,15 +254,17 @@ connected_p (SIM_DESC sd)
 
   /* Set non-blocking i/o.  */
 #if defined(F_GETFL) && defined(O_NONBLOCK)
-  flags = fcntl (sockser_fd, F_GETFL);
-  flags |= O_NONBLOCK;
-  if (fcntl (sockser_fd, F_SETFL, flags) == -1)
-    {
-      sim_io_eprintf (sd, "unable to set nonblocking i/o");
-      close (sockser_fd);
-      sockser_fd = -1;
-      return 0;
-    }
+  {
+    int flags = fcntl (sockser_fd, F_GETFL);
+    flags |= O_NONBLOCK;
+    if (fcntl (sockser_fd, F_SETFL, flags) == -1)
+      {
+	sim_io_eprintf (sd, "unable to set nonblocking i/o");
+	close (sockser_fd);
+	sockser_fd = -1;
+	return 0;
+      }
+  }
 #endif
   return 1;
 }
-- 
2.39.2