From a030863ebde99ebd9aa65d163315855b83c35ec6 Mon Sep 17 00:00:00 2001
From: adv <adv@opencascade.com>
Date: Mon, 9 Dec 2013 08:05:30 +0000
Subject: [PATCH] Protection from crash on close app.

---
 src/HYDROGUI/HYDROGUI_PolylineOp.cxx | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/HYDROGUI/HYDROGUI_PolylineOp.cxx b/src/HYDROGUI/HYDROGUI_PolylineOp.cxx
index 889a1336..b9fd474b 100755
--- a/src/HYDROGUI/HYDROGUI_PolylineOp.cxx
+++ b/src/HYDROGUI/HYDROGUI_PolylineOp.cxx
@@ -327,4 +327,11 @@ void HYDROGUI_PolylineOp::erasePreview()
       }
     }
   }
+
+  myViewManager = NULL;
+  if ( myCurve )
+  {
+    delete myCurve;
+    myCurve = NULL;
+  }
 }
-- 
2.39.2