Fixed issue #851. Mouse click on a highlighted object crashes Valentina.

--HG--
branch : develop

src/libs/vwidgets/vmaingraphicsview.cpp

@@ -536,32 +536,25 @@ void VMainGraphicsView::mousePressEvent(QMouseEvent *event)
             {
                 QGraphicsView::setDragMode(QGraphicsView::RubberBandDrag);
             }
+
             if (showToolOptions)
             {
-                QList<QGraphicsItem *> list = items(event->pos());
+                bool success = false;
-                if (list.size() == 0)
+                const QList<QGraphicsItem *> list = items(event->pos());
-                {
-                    emit itemClicked(nullptr);
-                    break;
-                }
-
-                const QList<QGraphicsItem *> sceneItems = this->scene()->items();
                 for (auto item : list)
                 {
-                    if (sceneItems.contains(item))
+                    if (item && item->type() > QGraphicsItem::UserType && item->type() <= VSimpleCurve::Type)
-                    {
-                        if (item->type() > QGraphicsItem::UserType && item->type() <= VSimpleCurve::Type)
                     {
                         emit itemClicked(item);
-                            break;
+                        success = true;
                     }
-                        else
+                }
+
+                if (not success)
                 {
                     emit itemClicked(nullptr);
                 }
             }
-                }
-            }
             break;
         }
         case Qt::MiddleButton: