reimplemented export process

app/threading/threadticketwatcher.cpp

@@ -46,9 +46,9 @@ void RenderTicketWatcher::SetTicket(RenderTicketPtr ticket)
 
   if (ticket_->IsFinished(false)) {
     locker.unlock();
-    emit Finished();
+    emit Finished(this);
   } else {
-    connect(ticket_.get(), &RenderTicket::Finished, this, &RenderTicketWatcher::Finished);
+    connect(ticket_.get(), &RenderTicket::Finished, this, &RenderTicketWatcher::TicketFinished);
   }
 }
 
@@ -93,4 +93,9 @@ void RenderTicketWatcher::Cancel()
   }
 }
 
+void RenderTicketWatcher::TicketFinished()
+{
+  emit Finished(this);
+}
+
 OLIVE_NAMESPACE_EXIT