tracker/pt: fix crash

Previously dtor assumed tracker was started before getting deleted. This
isn't always true, as in the case of protocol failure.

1 files changed, 6 insertions, 2 deletions

diff --git a/tracker-pt/ftnoir_tracker_pt.cpp b/tracker-pt/ftnoir_tracker_pt.cpp
index 88356771..c4ab5963 100644
--- a/tracker-pt/ftnoir_tracker_pt.cpp
+++ b/tracker-pt/ftnoir_tracker_pt.cpp
@@ -32,9 +32,13 @@ Tracker_PT::~Tracker_PT()
 {
     set_command(ABORT);
     wait();
-    delete video_widget;
+    if (video_widget)
+        delete video_widget;
     video_widget = NULL;
-    if (video_frame->layout()) delete video_frame->layout();
+    if (video_frame)
+    {
+        if (video_frame->layout()) delete video_frame->layout();
+    }
     // fast start/stop causes breakage
     portable::sleep(1000);
     camera.stop();