From 32ed0647978b95a8837661bbbbe809b92f3d07ac Mon Sep 17 00:00:00 2001
From: Lukas Matena <lukasmatena@seznam.cz>
Date: Fri, 29 Mar 2019 13:38:33 +0100
Subject: [PATCH] SLA gizmo fix: occasional crashes after deleting objects

---
 src/slic3r/GUI/Gizmos/GLGizmoSlaSupports.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/slic3r/GUI/Gizmos/GLGizmoSlaSupports.cpp b/src/slic3r/GUI/Gizmos/GLGizmoSlaSupports.cpp
index df7004b3f..d83ef9ed8 100644
--- a/src/slic3r/GUI/Gizmos/GLGizmoSlaSupports.cpp
+++ b/src/slic3r/GUI/Gizmos/GLGizmoSlaSupports.cpp
@@ -44,8 +44,11 @@ bool GLGizmoSlaSupports::on_init()
 
 void GLGizmoSlaSupports::set_sla_support_data(ModelObject* model_object, const Selection& selection)
 {
-    if (selection.is_empty())
+    if (selection.is_empty()) {
+        m_model_object = nullptr;
+        m_old_model_object = nullptr;
         return;
+    }
 
     m_old_model_object = m_model_object;
     m_model_object = model_object;