fix(ui/views/App/Calls/EndedCall): test call and coding style

linphone-desktop/ui/views/App/Calls/EndedCall.qml

@@ -77,15 +77,14 @@ Rectangle {
       Layout.preferredHeight: CallStyle.actionArea.height
 
       Text {
-        width: parent.width
-
-        color: CallStyle.header.reason.color
-        font.pointSize: CallStyle.header.reason.fontSize
+        color: CallStyle.actionArea.callError.color
+        font.pointSize: CallStyle.actionArea.callError.fontSize
         horizontalAlignment: Text.AlignHCenter
+        width: parent.width
 
         text: {
           var call = endedCall.call
-          return call.reason
+          return call ? call.reason : ''
         }
       }
     }

linphone-desktop/ui/views/App/Styles/Calls/CallStyle.qml

@@ -23,6 +23,11 @@ QtObject {
     property QtObject vu: QtObject {
       property int spacing: 5
     }
+
+    property QtObject callError: QtObject {
+      property color color: Colors.i
+      property int fontSize: 12
+    }
   }
 
   property QtObject container: QtObject {
@@ -70,10 +75,5 @@ QtObject {
     property QtObject stats: QtObject {
       property int relativeY: 90
     }
-
-    property QtObject reason: QtObject {
-      property color color: Colors.i
-      property int fontSize: 12
-    }
   }
 }