Fixed #1504: Crash when trying to answer calls but call has been disconnected

git-svn-id: http://svn.pjsip.org/repos/pjproject/trunk@4118 74dad513-b988-da41-8d7b-12977e46ad98

1 files changed, 8 insertions, 0 deletions

diff --git a/pjsip/src/pjsua-lib/pjsua_call.c b/pjsip/src/pjsua-lib/pjsua_call.c
index cbd2afac..a6264f3a 100644
--- a/pjsip/src/pjsua-lib/pjsua_call.c
+++ b/pjsip/src/pjsua-lib/pjsua_call.c
@@ -885,6 +885,14 @@ on_return:
             next = answer->next;
             pjsua_call_answer(call_id, answer->code, answer->reason,
                               answer->msg_data);
+            
+            /* Call might have been disconnected if application is answering
+             * with 200/OK and the media failed to start.
+             * See pjsua_call_answer() below.
+             */
+            if (!call->inv || !call->inv->pool_prov)
+                break;
+
             pj_list_erase(answer);
             answer = next;
         }