[categorized] Fix blank layers when using categorized renderer

Fixes #21188
This commit is contained in:
Nyall Dawson 2019-02-12 13:37:52 +10:00
parent 51a4981237
commit 7714bfbfbe

View File

@ -533,7 +533,7 @@ QString QgsCategorizedSymbolRenderer::filter( const QgsFields &fields )
for ( const QgsRendererCategory &cat : qgis::as_const( mCategories ) )
{
if ( cat.value() == "" )
if ( cat.value() == "" || cat.value().isNull() )
{
hasDefault = true;
defaultActive = cat.renderState();