Fix a crash (#3147)

git-svn-id: http://svn.osgeo.org/qgis/trunk@14427 c8812cc2-4d05-0410-92ff-de0c093fc19c
qgis · Oct 22, 2010 · 9f7ed1e · 9f7ed1e
1 parent 9cfd7cb
commit 9f7ed1e
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/src/gui/symbology-ng/qgssymbolv2propertiesdialog.cpp b/src/gui/symbology-ng/qgssymbolv2propertiesdialog.cpp
@@ -169,9 +169,10 @@ void QgsSymbolV2PropertiesDialog::populateLayerTypes()
 void QgsSymbolV2PropertiesDialog::updateUi()
 {
   int row = currentRowIndex();
+  int count = listLayers->model()->rowCount();
   btnUp->setEnabled( row > 0 );
-  btnDown->setEnabled( row < listLayers->model()->rowCount() - 1 && row != -1 );
-  btnRemoveLayer->setEnabled( row != -1 );
+  btnDown->setEnabled( row < count - 1 && row != -1 );
+  btnRemoveLayer->setEnabled( count > 1 && row != -1 );
 }
 
 void QgsSymbolV2PropertiesDialog::updatePreview()