don't crash on late update timeouts

qgis · Mar 16, 2017 · 5541ad0 · 5541ad0
1 parent 90e9144
commit 5541ad0
Showing 1 changed file with 5 additions and 2 deletions.
diff --git a/src/gui/qgsmapcanvas.cpp b/src/gui/qgsmapcanvas.cpp
@@ -825,8 +825,11 @@ QgsRectangle QgsMapCanvas::imageRect( const QImage& img, const QgsMapSettings& m
 
 void QgsMapCanvas::mapUpdateTimeout()
 {
-  const QImage& img = mJob->renderedImage();
-  mMap->setContent( img, imageRect( img, mSettings ) );
+  if ( mJob )
+  {
+    const QImage& img = mJob->renderedImage();
+    mMap->setContent( img, imageRect( img, mSettings ) );
+  }
 }
 
 void QgsMapCanvas::stopRendering()