Forgot to commit a file last Friday that is necessary for WMS based printing

git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@10892 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: mhugent

src/core/raster/qgsrasterlayer.cpp

@@ -1501,6 +1501,8 @@ bool QgsRasterLayer::draw( QgsRenderContext& rendererContext )
 
     emit statusChanged( tr( "Retrieving using %1" ).arg( mProviderKey ) );
 
+    mDataProvider->setDpi(rendererContext.rasterScaleFactor() * 25.4 * rendererContext.scaleFactor());
+
     QImage* image =
       mDataProvider->draw(
         myRasterExtent,