Picture handling: hide the pictures before deleting

Because of the way deleteLater() is implemented, the pictures need to be
hidden, otherwise they might stay around at the wrong time (e.g., when
printing).

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

qt-ui/profile/profilewidget2.cpp

@@ -1349,6 +1349,7 @@ void ProfileWidget2::keyEscAction()
 void ProfileWidget2::plotPictures()
 {
 	Q_FOREACH(DivePictureItem *item, pictures){
+		item->hide();
 		item->deleteLater();
 	}
 	pictures.clear();