Ticket #14: Don't change RTP/RTCP SSRC on re-INVITE

git-svn-id: https://svn.pjsip.org/repos/pjproject/trunk@1591 74dad513-b988-da41-8d7b-12977e46ad98
diff --git a/pjsip/src/pjsua-lib/pjsua_call.c b/pjsip/src/pjsua-lib/pjsua_call.c
index 4de4a22..86525ca 100644
--- a/pjsip/src/pjsua-lib/pjsua_call.c
+++ b/pjsip/src/pjsua-lib/pjsua_call.c
@@ -104,6 +104,7 @@
     call->inv = NULL;
     call->user_data = NULL;
     call->session = NULL;
+    call->ssrc = pj_rand();
     call->xfer_sub = NULL;
     call->last_code = (pjsip_status_code) 0;
     call->conf_slot = PJSUA_INVALID_ID;