canvas: don't try to connect to null layers

jef-n · jef-n · commit d315fdfabc4b · 2017-03-03T00:08:14.000+01:00
diff --git a/src/gui/qgsmapcanvas.cpp b/src/gui/qgsmapcanvas.cpp
@@ -310,6 +310,8 @@ void QgsMapCanvas::setLayers( const QList<QgsMapLayer*>& layers )
 
   Q_FOREACH ( QgsMapLayer* layer, layers )
   {
+    if ( !layer )
+      continue;
     connect( layer, &QgsMapLayer::repaintRequested, this, &QgsMapCanvas::layerRepaintRequested );
     connect( layer, &QgsMapLayer::crsChanged, this, &QgsMapCanvas::layerCrsChange );
     connect( layer, &QgsMapLayer::autoRefreshIntervalChanged, this, &QgsMapCanvas::updateAutoRefreshTimer );

Original file line number	Diff line number	Diff line change
`@@ -310,6 +310,8 @@ void QgsMapCanvas::setLayers( const QList<QgsMapLayer*>& layers )`
`310`	`310`
`311`	`311`	`Q_FOREACH ( QgsMapLayer* layer, layers )`
`312`	`312`	`{`
	`313`	`+ if ( !layer )`
	`314`	`+ continue;`
`313`	`315`	`connect( layer, &QgsMapLayer::repaintRequested, this, &QgsMapCanvas::layerRepaintRequested );`
`314`	`316`	`connect( layer, &QgsMapLayer::crsChanged, this, &QgsMapCanvas::layerCrsChange );`
`315`	`317`	`connect( layer, &QgsMapLayer::autoRefreshIntervalChanged, this, &QgsMapCanvas::updateAutoRefreshTimer );`