[qet] [3597] Bug fix

[subversion@xxxxxxxxxxxxx]

Revision: 3597
Author:   blacksun
Date:     2015-01-11 12:31:53 +0100 (Sun, 11 Jan 2015)
Log Message:
-----------
Bug fix

Modified Paths:
--------------
    trunk/sources/qetgraphicsitem/conductor.cpp

Modified: trunk/sources/qetgraphicsitem/conductor.cpp
===================================================================
--- trunk/sources/qetgraphicsitem/conductor.cpp	2015-01-11 11:10:57 UTC (rev 3596)
+++ trunk/sources/qetgraphicsitem/conductor.cpp	2015-01-11 11:31:53 UTC (rev 3597)
@@ -1469,10 +1469,13 @@
 }
 
 /**
- * @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();