Some simplifications, using UNO_QUERY_THROW

Change-Id: I313b17cea20fc9dc3b617ecc41626410c0dfb127
Reviewed-on: https://gerrit.libreoffice.org/34267Tested-by: Stephan Bergmann <sbergman@redhat.com>
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

framework/source/services/taskcreatorsrv.cxx

@@ -250,10 +250,7 @@ css::uno::Reference< css::awt::XWindow > TaskCreatorService::implts_createContai
 
     // create a new blank container window and get access to parent container to append new created task.
     css::uno::Reference< css::awt::XWindowPeer > xPeer      = xToolkit->createWindow( aDescriptor );
-    css::uno::Reference< css::awt::XWindow >     xWindow    ( xPeer, css::uno::UNO_QUERY );
-    if ( ! xWindow.is())
-        throw css::uno::Exception("TaskCreator service was not able to create suitable frame window.",
-                                  static_cast< ::cppu::OWeakObject* >(this));
+    css::uno::Reference< css::awt::XWindow >     xWindow    ( xPeer, css::uno::UNO_QUERY_THROW );
 
     sal_Int32 nBackground = 0xffffffff;