netlink: Make nl_sock_transact() discard reply if 'replyp' is null.

Sometimes only the success or failure return value is interesting, not the
details of the reply, so this simplifies some callers.

1 files changed, 2 insertions, 3 deletions

diff --git a/vswitchd/proc-net-compat.c b/vswitchd/proc-net-compat.c
index 72eb7be3..106a7c3f 100644
--- a/vswitchd/proc-net-compat.c
+++ b/vswitchd/proc-net-compat.c
@@ -72,7 +72,7 @@ proc_net_compat_init(void)
 static int
 set_proc_file(const char *dir, const char *file, const char *data)
 {
-    struct ofpbuf request, *reply;
+    struct ofpbuf request;
     int retval;
 
     ofpbuf_init(&request, 0);
@@ -84,9 +84,8 @@ set_proc_file(const char *dir, const char *file, const char *data)
         nl_msg_put_string(&request, BRC_GENL_A_PROC_DATA, data);
     }
 
-    retval = nl_sock_transact(brc_sock, &request, &reply);
+    retval = nl_sock_transact(brc_sock, &request, NULL);
     ofpbuf_uninit(&request);
-    ofpbuf_delete(reply);
     if (retval) {
         VLOG_WARN_RL(&rl, "failed to %s /proc/%s/%s (%s)",
                      data ? "update" : "remove", dir, file, strerror(retval));