zebra: fix compilation on OpenBSD

OpenBSD doesn't define RTM_LOCK anymore:
https://marc.info/?l=openbsd-tech&m=153018811429193&w=2

Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>

diff --git a/zebra/kernel_socket.c b/zebra/kernel_socket.c
index 4f89d53e399cdbf19e3eb581af5ed288b1d831ec..3e46a79e964191c82a1905abe12ab236a0bbb390 100644 (file)
--- a/zebra/kernel_socket.c
+++ b/zebra/kernel_socket.c
@@ -139,7 +139,9 @@ const struct message rtm_type_str[] = {{RTM_ADD, "RTM_ADD"},
                                       {RTM_LOSING, "RTM_LOSING"},
                                       {RTM_REDIRECT, "RTM_REDIRECT"},
                                       {RTM_MISS, "RTM_MISS"},
+#ifdef RTM_LOCK
                                       {RTM_LOCK, "RTM_LOCK"},
+#endif /* RTM_LOCK */
 #ifdef OLDADD
                                       {RTM_OLDADD, "RTM_OLDADD"},
 #endif /* RTM_OLDADD */