protect against null deref.

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@6894 d0543943-73ff-0310-b7d9-9358b9ac24b2

diff --git a/src/mod/endpoints/mod_sofia/sofia.c b/src/mod/endpoints/mod_sofia/sofia.c
index f5aa7c8d65ef4d7817beb1f0f6136a2861da184c..0443a7781c74fa7f8dccaa452d8583e81fb0d935 100644 (file)
--- a/src/mod/endpoints/mod_sofia/sofia.c
+++ b/src/mod/endpoints/mod_sofia/sofia.c
@@ -1807,7 +1807,11 @@ void sofia_handle_sip_i_refer(nua_t *nua, sofia_profile_t *profile, nua_handle_t
                                                        switch_call_cause_t cause = SWITCH_CAUSE_NORMAL_CLEARING;
                                                        uint32_t timeout = 60;
                                                        char *tuuid_str;
-                                                       const char *port = refer_to->r_url->url_port;
+                                                       const char *port = NULL;
+                                                       
+                                                       if (refer_to && refer_to->r_url && refer_to->r_url->url_port) {
+                                                               port = refer_to->r_url->url_port;
+                                                       }
 
                                                        if (switch_strlen_zero(port)) {
                                                                port = "5060";