freetdm: ss7 -bug fix

diff --git a/libs/freetdm/src/ftmod/ftmod_sangoma_ss7/ftmod_sangoma_ss7_main.c b/libs/freetdm/src/ftmod/ftmod_sangoma_ss7/ftmod_sangoma_ss7_main.c
index a47656f70e4ab22c1b0c380c4e44ec69b991d54b..b5fe619446ee7a27a9db102e232c64ae1619c418 100644 (file)
--- a/libs/freetdm/src/ftmod/ftmod_sangoma_ss7/ftmod_sangoma_ss7_main.c
+++ b/libs/freetdm/src/ftmod/ftmod_sangoma_ss7/ftmod_sangoma_ss7_main.c
@@ -1240,6 +1240,7 @@ static ftdm_status_t ftdm_sangoma_ss7_start(ftdm_span_t * span)
        for (x = 1; x < (span->chan_count + 1); x++) {
                /* extract the channel structure and sngss7 channel data */
                ftdmchan = span->channels[x];
+               if (ftdmchan->call_data == NULL) continue;
                sngss7_info = ftdmchan->call_data;
                sngss7_span = ftdmchan->span->mod_data;