[mod_conference] Fix possible NULL argument.

diff --git a/src/mod/applications/mod_conference/conference_event.c b/src/mod/applications/mod_conference/conference_event.c
index 6977b8a494d9c5785ae56400c6d64e9d67b63c51..8a84fdd0495deed12bdb87fe777da3530af6f2ab 100644 (file)
--- a/src/mod/applications/mod_conference/conference_event.c
+++ b/src/mod/applications/mod_conference/conference_event.c
@@ -108,7 +108,7 @@ void conference_event_mod_channel_handler(const char *event_channel, cJSON *json
                }
        }
 
-       switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "conf %s CMD %s [%s] %s\n", conference_name, key, action, cid);
+       switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "conf %s CMD %s [%s] %s\n", conference_name, key, action ? action : "N/A", cid);
 
        if (zstr(action)) {
                goto end;