use more concrete types in chart2, ChartModel

Change-Id: I621cc667d914ddfbfc84a9dd5a71bc76d411954b
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/128847
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

1 files changed, 3 insertions, 1 deletions

diff --git a/chart2/source/tools/DataSourceHelper.cxx b/chart2/source/tools/DataSourceHelper.cxx
index 627d94416d63..851204c70a75 100644
--- a/chart2/source/tools/DataSourceHelper.cxx
+++ b/chart2/source/tools/DataSourceHelper.cxx
@@ -450,7 +450,9 @@ void DataSourceHelper::setRangeSegmentation(
     if( !xDataSource.is() )
         return;
 
-    ControllerLockGuardUNO aCtrlLockGuard( xChartModel );
+    auto pModel = dynamic_cast<ChartModel*>(xChartModel.get());
+    assert(pModel);
+    ControllerLockGuardUNO aCtrlLockGuard( pModel );
     xDiagram->setDiagramData( xDataSource, aArguments );
 }