Fix missing live updates when raster colorize color changes

Author: nyalldawson

src/gui/raster/qgsrendererrasterpropertieswidget.cpp

@@ -93,6 +93,7 @@ QgsRendererRasterPropertiesWidget::QgsRendererRasterPropertiesWidget( QgsMapLaye
   connect( mContrastSpinBox, SIGNAL( valueChanged( int ) ), this, SIGNAL( widgetChanged() ) );
   connect( spinBoxSaturation, SIGNAL( valueChanged( int ) ), this, SIGNAL( widgetChanged() ) );
   connect( spinColorizeStrength, SIGNAL( valueChanged( int ) ), this, SIGNAL( widgetChanged() ) );
+  connect( btnColorizeColor, SIGNAL( colorChanged( QColor ) ), this, SIGNAL( widgetChanged() ) );
 
   connect( mBlendModeComboBox, SIGNAL( currentIndexChanged( int ) ), this, SIGNAL( widgetChanged() ) );
   connect( mZoomedInResamplingComboBox, SIGNAL( currentIndexChanged( int ) ), this, SIGNAL( widgetChanged() ) );