From 3154a1bdaea12a020c3d94850287920416620051 Mon Sep 17 00:00:00 2001
From: blacksun
 <blacksun@r5936  blacksun  2019-06-24 19:44:37 +0200 (lun. 24 juin 2019)>
Date: Sun, 11 Jan 2015 11:31:53 +0000
Subject: [PATCH] Bug fix

git-svn-id: svn+ssh://svn.tuxfamily.org/svnroot/qet/qet/trunk@3597 bfdf4180-ca20-0410-9c96-a3a8aa849046
---
 sources/qetgraphicsitem/conductor.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/sources/qetgraphicsitem/conductor.cpp b/sources/qetgraphicsitem/conductor.cpp
index be101ff1d..672eb56e6 100644
--- a/sources/qetgraphicsitem/conductor.cpp
+++ b/sources/qetgraphicsitem/conductor.cpp
@@ -1469,10 +1469,13 @@ QSet<Conductor *> Conductor::relatedPotentialConductors(const bool all_diagram,
 }
 
 /**
- * @return l'editeur de schemas parent ou 0
+ * @brief Conductor::diagramEditor
+ * @return The parent diagram editor or nullptr;
  */
 QETDiagramEditor* Conductor::diagramEditor() const {
-	if (diagram()->views().isEmpty()) return 0;
+	if (!diagram())                     return nullptr;
+	if (diagram() -> views().isEmpty()) return nullptr;
+
 	QWidget *w = const_cast<QGraphicsView *>(diagram() -> views().at(0));
 	while (w -> parentWidget() && !w -> isWindow()) {
 		w = w -> parentWidget();