Add test for event before calling event->Duration.

2022-03-26 12:47:26 -04:00 · 2022-03-26 12:47:26 -04:00 · 9f404f7b97
parent 1c9c3d34f5
commit 9f404f7b97
1 changed files with 1 additions and 1 deletions
--- a/src/zm_monitor.cpp
+++ b/src/zm_monitor.cpp
@ -2028,7 +2028,7 @@ bool Monitor::Analyse() {
              Info("%s: %03d - Gone into alert state", name.c_str(), analysis_image_count);
              shared_data->state = state = ALERT;
            } else if (state == ALERT) {
-              if (
+              if ( event &&
                  ((analysis_image_count - last_alarm_count) > post_event_count)
                  &&
                  (event->Duration() >= min_section_length)) {