[processing] fixed bug in ModelerScene when position of output is not defined

Author: volaya

python/plugins/processing/modeler/ModelerScene.py

@@ -123,7 +123,7 @@ def paintModel(self, model):
                     self.addItem(item)
                     pos = alg.outputs[key].pos
                     if pos is None:
-                        pos = (alg.pos() + QtCore.QPointF(ModelerGraphicItem.BOX_WIDTH, 0)
+                        pos = (alg.pos + QtCore.QPointF(ModelerGraphicItem.BOX_WIDTH, 0)
                             + self.algItems[alg.name].getLinkPointForOutput(idx))
                     item.setPos(pos)
                     outputItems[key] = item