traffic_summary: avoid uninitialised variable warning

Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

diff --git a/script/traffic_summary.pl b/script/traffic_summary.pl
index 5c69ca186171c916e6c5a9a6c974b1b2ce5236e8..05c1cf03702b34264e46fbd713c6ffe26d08abda 100755 (executable)
--- a/script/traffic_summary.pl
+++ b/script/traffic_summary.pl
@@ -518,7 +518,7 @@ sub format_ldap
 #------------------------------------------------------------------------------
 sub format_kerberos
 {
-    my $msg_type    = $proto_data{'kerberos.msg_type.show'};
+    my $msg_type    = $proto_data{'kerberos.msg_type.show'} || '';
     my $cname_type  = $proto_data{'kerberos.cname.type'} || '';
     my $description = $proto_data{'kerberos.msg_type.showname'} || '';