Merge pull request #447 in FS/freeswitch from bugfix/FS-7911-v1.4 to v1.4

* commit 'd5d45173':
  FS-7912: [mod_conference] fix for v1.4 branch to not allocate for conference cdr if conference cdr is disabled

src/mod/applications/mod_conference/mod_conference.c

@@ -812,6 +812,8 @@ static void process_al(al_handle_t *al, void *data, switch_size_t datalen, int r
 
 static void conference_cdr_del(conference_member_t *member)
 {
+	if (!member->cdr_node) return;
+
 	if (member->channel) {
 		switch_channel_get_variables(member->channel, &member->cdr_node->var_event);
 	}
@@ -826,6 +828,8 @@ static void conference_cdr_add(conference_member_t *member)
 	switch_caller_profile_t *cp;
 	switch_channel_t *channel;
 
+	if (zstr(member->conference->log_dir) && (member->conference->cdr_event_mode == CDRE_NONE)) return;
+
 	np = switch_core_alloc(member->conference->pool, sizeof(*np));
 
 	np->next = member->conference->cdr_nodes;
@@ -857,6 +861,8 @@ static void conference_cdr_rejected(conference_obj_t *conference, switch_channel
 	conference_cdr_reject_t *rp;
 	switch_caller_profile_t *cp;
 
+	if (zstr(conference->log_dir) && (conference->cdr_event_mode == CDRE_NONE)) return;
+
 	rp = switch_core_alloc(conference->pool, sizeof(*rp));
 
 	rp->next = conference->cdr_rejected;