avoid crash when histogram and pyramid pages have been deleted

qgis · Mar 16, 2020 · 9dc9559 · 9dc9559
1 parent af56ffb
commit 9dc9559
Showing 1 changed file with 8 additions and 2 deletions.
diff --git a/src/gui/raster/qgsrasterlayerproperties.cpp b/src/gui/raster/qgsrasterlayerproperties.cpp
@@ -495,9 +495,15 @@ QgsRasterLayerProperties::QgsRasterLayerProperties( QgsMapLayer *lyr, QgsMapCanv
   mOptsPage_Source->setProperty( "helpPage", QStringLiteral( "working_with_raster/raster_properties.html#source-properties" ) );
   mOptsPage_Style->setProperty( "helpPage", QStringLiteral( "working_with_raster/raster_properties.html#symbology-properties" ) );
   mOptsPage_Transparency->setProperty( "helpPage", QStringLiteral( "working_with_raster/raster_properties.html#transparency-properties" ) );
-  mOptsPage_Histogram->setProperty( "helpPage", QStringLiteral( "working_with_raster/raster_properties.html#histogram-properties" ) );
+
+  if ( mOptsPage_Histogram )
+    mOptsPage_Histogram->setProperty( "helpPage", QStringLiteral( "working_with_raster/raster_properties.html#histogram-properties" ) );
+
   mOptsPage_Rendering->setProperty( "helpPage", QStringLiteral( "working_with_raster/raster_properties.html#rendering-properties" ) );
-  mOptsPage_Pyramids->setProperty( "helpPage", QStringLiteral( "working_with_raster/raster_properties.html#pyramids-properties" ) );
+
+  if ( mOptsPage_Pyramids )
+    mOptsPage_Pyramids->setProperty( "helpPage", QStringLiteral( "working_with_raster/raster_properties.html#pyramids-properties" ) );
+
   mOptsPage_Metadata->setProperty( "helpPage", QStringLiteral( "working_with_raster/raster_properties.html#metadata-properties" ) );
   mOptsPage_Legend->setProperty( "helpPage", QStringLiteral( "working_with_raster/raster_properties.html#legend-properties" ) );
   mOptsPage_Server->setProperty( "helpPage", QStringLiteral( "working_with_raster/raster_properties.html#server-properties" ) );