sdremote - don't crash if we connect during load, before things are setup.

Change-Id: I1837ea58b9c8f74aca9afb78bafbab61af189842

sd/source/ui/remotecontrol/Communicator.cxx

@@ -53,11 +53,15 @@ void Communicator::execute()
     Receiver aReceiver( pTransmitter );
     try {
         uno::Reference< frame::XDesktop2 > xFramesSupplier = frame::Desktop::create( ::comphelper::getProcessComponentContext() );
-        uno::Reference< frame::XFrame > xFrame ( xFramesSupplier->getActiveFrame(), uno::UNO_QUERY_THROW );
-        uno::Reference<presentation::XPresentationSupplier> xPS ( xFrame->getController()->getModel(), uno::UNO_QUERY_THROW);
-        uno::Reference<presentation::XPresentation2> xPresentation(
-            xPS->getPresentation(), uno::UNO_QUERY_THROW);
-        if ( xPresentation->isRunning() )
+        uno::Reference< frame::XFrame > xFrame ( xFramesSupplier->getActiveFrame(), uno::UNO_QUERY );
+
+        uno::Reference<presentation::XPresentationSupplier> xPS;
+        if( xFrame.is() )
+            xPS = uno::Reference<presentation::XPresentationSupplier>( xFrame->getController()->getModel(), uno::UNO_QUERY );
+        uno::Reference<presentation::XPresentation2> xPresentation;
+        if( xPS.is() )
+            xPresentation = uno::Reference<presentation::XPresentation2>( xPS->getPresentation(), uno::UNO_QUERY );
+        if ( xPresentation.is() && xPresentation->isRunning() )
         {
             presentationStarted( xPresentation->getController() );
         }