From b453701e1f17c31cf53df53139000b72816c94d2 Mon Sep 17 00:00:00 2001
From: osa <osa@opencascade.com>
Date: Fri, 4 Sep 2020 11:22:03 +0300
Subject: [PATCH] Visualization, PrsMgr_Presentation - remove graphic structure
 before nullify [OCCT 7.2.0 backport]

---
 src/PrsMgr/PrsMgr_Presentation.cxx | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/PrsMgr/PrsMgr_Presentation.cxx b/src/PrsMgr/PrsMgr_Presentation.cxx
index 17ff1c225e..b3fe320fb1 100644
--- a/src/PrsMgr/PrsMgr_Presentation.cxx
+++ b/src/PrsMgr/PrsMgr_Presentation.cxx
@@ -110,6 +110,7 @@ void PrsMgr_Presentation::Erase()
   // Disconnect other structures
   myStructure->DisconnectAll (Graphic3d_TOC_DESCENDANT);
   // Clear groups and remove graphic structure
+  myStructure->Graphic3d_Structure::Remove();
   myStructure.Nullify();
 }