Fix potential crash on destroying QgsMapCanvas

If an active job is rendering when a map canvas is destroyed then the canvas can crash
qgis · Mar 8, 2017 · 3210fcc · 3210fcc
1 parent 3f1cd69
commit 3210fcc
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/gui/qgsmapcanvas.cpp b/src/gui/qgsmapcanvas.cpp
@@ -213,8 +213,8 @@ QgsMapCanvas::~QgsMapCanvas()
 
   if ( mJob )
   {
-    mJob->cancel();
-    Q_ASSERT( !mJob );
+    whileBlocking( mJob )->cancel();
+    delete mJob;
   }
 
   delete mCache;