Treat TVBs as opaque: use the accessor functions instead of accessing the fields

[obnox/wireshark/wip.git] / tap-megacostat.c

diff --git a/tap-megacostat.c b/tap-megacostat.c
index 5e2b3c5d36682527315cb3e583512271b4c42651..6e5186c688ea93b67c1dd632f3e211bdee56c5f9 100644 (file)
--- a/tap-megacostat.c
+++ b/tap-megacostat.c
@@ -39,7 +39,6 @@
 #include <epan/tap.h>
 #include <epan/stat_cmd_args.h>
 #include "epan/value_string.h"
-#include "register.h"
 #include "epan/gcp.h"
 #include "timestats.h"
 #include <epan/prefs-int.h>
@@ -85,15 +84,21 @@ megacostat_init(const char *optarg, void* userdata _U_)
        int i;
        GString *error_string;
        pref_t *megaco_ctx_track,*h248_ctx_track;
-       
+
        megaco_ctx_track = prefs_find_preference(prefs_find_module("megaco"),"ctx_info");
        h248_ctx_track = prefs_find_preference(prefs_find_module("h248"),"ctx_info");
+
+       if (!megaco_ctx_track || !h248_ctx_track) {
+               /* No such preferences */
+               return;
+       }
+
        if (!*megaco_ctx_track->varp.boolp || !*h248_ctx_track->varp.boolp) {
                printf("Track Context option at Protocols -> MEGACO and Protocols -> H248 preferences\n");
                printf("has to be set to true to enable measurement of service response times.\n");
                exit(1);
        }
-       
+
        ms=g_malloc(sizeof(megacostat_t));
        if(!strncmp(optarg,"megaco,rtd,",11)){
                ms->filter=g_strdup(optarg+11);