in order to please coverity, do not have the return at the end of the function never reachable

stun/usages/bind.c

@@ -518,11 +518,11 @@ StunUsageBindReturn stun_usage_bind_run (const struct sockaddr *srv,
       } else if (bind_ret ==  STUN_USAGE_BIND_RETURN_INVALID) {
         ret = STUN_USAGE_TRANS_RETURN_RETRY;
       } else {
-        return bind_ret;
+        break;
       }
     }
   }
   while (ret == STUN_USAGE_TRANS_RETURN_RETRY);
 
-  return STUN_USAGE_BIND_RETURN_SUCCESS;
+  return bind_ret;
 }