krb5 commit: Fix build on systems without RTM_OLD*

[Benjamin Kaduk]

https://github.com/krb5/krb5/commit/fd352d41a79013114708e99510b6be3836200237
commit fd352d41a79013114708e99510b6be3836200237
Author: Ben Kaduk <kaduk at mit.edu>
Date:   Thu Jul 3 10:42:21 2014 -0400

    Fix build on systems without RTM_OLD*
    
    For example, FreeBSD has removed RTM_OLDADD and RTM_OLDDEL from its API
    in March 2014, with the message:
    Garbage collect long time obsoleted (or never used) stuff from routing API
    
    Only attempt to define behavior for these cases if they are defined.
    
    ticket: 7955 (new)
    tags: pullup
    target_version: 1.12.2

 src/lib/apputils/net-server.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/src/lib/apputils/net-server.c b/src/lib/apputils/net-server.c
index 02b1058..437c037 100644
--- a/src/lib/apputils/net-server.c
+++ b/src/lib/apputils/net-server.c
@@ -986,8 +986,12 @@ routing_update_needed(struct rt_msghdr *rtm)
     case RTM_NEWADDR:
     case RTM_DELADDR:
     case RTM_IFINFO:
+#ifdef RTM_OLDADD
     case RTM_OLDADD:
+#endif
+#ifdef RTM_OLDDEL
     case RTM_OLDDEL:
+#endif
         /*
          * Some flags indicate routing table updates that don't
          * indicate local address changes.  They may come from