From be020c8d9de6c792cb682ad9a579d1b6bd416eaf Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@users.sourceforge.net>
Date: Sun, 16 Jan 2022 18:59:26 +0100
Subject: [PATCH] PD: fix crash in thickness dialog when clicking 'Add Face'
 button

---
 src/Mod/PartDesign/Gui/TaskDressUpParameters.cpp | 9 ++++++---
 src/Mod/PartDesign/Gui/TaskDressUpParameters.h   | 2 +-
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/Mod/PartDesign/Gui/TaskDressUpParameters.cpp b/src/Mod/PartDesign/Gui/TaskDressUpParameters.cpp
index fba5c20899..f61141910a 100644
--- a/src/Mod/PartDesign/Gui/TaskDressUpParameters.cpp
+++ b/src/Mod/PartDesign/Gui/TaskDressUpParameters.cpp
@@ -181,15 +181,18 @@ void TaskDressUpParameters::onButtonRefAdd(bool checked)
         clearButtons(refAdd);
         hideObject();
         selectionMode = refAdd;
-        addAllEdgesAction->setEnabled(true);
+        if (addAllEdgesAction)
+            addAllEdgesAction->setEnabled(true);
         AllowSelectionFlags allow;
         allow.setFlag(AllowSelection::EDGE, allowEdges);
         allow.setFlag(AllowSelection::FACE, allowFaces);
         Gui::Selection().clearSelection();
         Gui::Selection().addSelectionGate(new ReferenceSelection(this->getBase(), allow));
         DressUpView->highlightReferences(true);
-    } else {
-        addAllEdgesAction->setEnabled(false);
+    }
+    else {
+        if (addAllEdgesAction)
+            addAllEdgesAction->setEnabled(false);
         exitSelectionMode();
         DressUpView->highlightReferences(false);
     }
diff --git a/src/Mod/PartDesign/Gui/TaskDressUpParameters.h b/src/Mod/PartDesign/Gui/TaskDressUpParameters.h
index 82089fd882..197a698da1 100644
--- a/src/Mod/PartDesign/Gui/TaskDressUpParameters.h
+++ b/src/Mod/PartDesign/Gui/TaskDressUpParameters.h
@@ -95,7 +95,7 @@ protected:
     QAction* addAllEdgesAction;
 
     bool allowFaces, allowEdges;
-    selectionModes selectionMode;    
+    selectionModes selectionMode;
     int transactionID;
 };