Fix crash if start trade with opened storage.

4 files changed, 22 insertions, 2 deletions

diff --git a/src/gui/widgets/itemcontainer.cpp b/src/gui/widgets/itemcontainer.cpp
index ee2e35920..f24be7737 100644
--- a/src/gui/widgets/itemcontainer.cpp
+++ b/src/gui/widgets/itemcontainer.cpp
@@ -507,7 +507,7 @@ void ItemContainer::mouseReleased(MouseEvent &event)
         Net::getInventoryHandler()->moveItem(mSelectedIndex, index);
         selectNone();
     }
-    else
+    else if (mInventory)
     {
         const DragDropSource src = dragDrop.getSource();
         DragDropSource dst = DRAGDROP_SOURCE_EMPTY;
diff --git a/src/gui/widgets/itemcontainer.h b/src/gui/widgets/itemcontainer.h
index f7bc44849..06e9fd459 100644
--- a/src/gui/widgets/itemcontainer.h
+++ b/src/gui/widgets/itemcontainer.h
@@ -131,6 +131,9 @@ class ItemContainer final : public Widget,
         bool getClickCount() const A_WARN_UNUSED
         { return mClicks; }
 
+        void unsetInventory()
+        { mInventory = nullptr; }
+
     private:
         enum Direction
         {
diff --git a/src/gui/windows/inventorywindow.cpp b/src/gui/windows/inventorywindow.cpp
index c2a4b4636..01e5e052d 100644
--- a/src/gui/windows/inventorywindow.cpp
+++ b/src/gui/windows/inventorywindow.cpp
@@ -271,7 +271,8 @@ void InventoryWindow::postInit()
 InventoryWindow::~InventoryWindow()
 {
     invInstances.remove(this);
-    mInventory->removeInventoyListener(this);
+    if (mInventory)
+        mInventory->removeInventoyListener(this);
     if (!invInstances.empty())
         invInstances.front()->updateDropButton();
 
@@ -681,7 +682,10 @@ void InventoryWindow::close()
     else
     {
         if (Net::getInventoryHandler())
+        {
             Net::getInventoryHandler()->closeStorage(Inventory::STORAGE);
+            Net::getInventoryHandler()->forgotStorage();
+        }
         scheduleDelete();
     }
 }
@@ -806,3 +810,14 @@ void InventoryWindow::setVisible(bool visible)
         mSortDropDown->hideDrop();
     Window::setVisible(visible);
 }
+
+void InventoryWindow::unsetInventory()
+{
+    if (mInventory)
+    {
+        mInventory->removeInventoyListener(this);
+        if (mItems)
+            mItems->unsetInventory();
+    }
+    mInventory = nullptr;
+}
diff --git a/src/gui/windows/inventorywindow.h b/src/gui/windows/inventorywindow.h
index 7e47e0362..10e1e21e2 100644
--- a/src/gui/windows/inventorywindow.h
+++ b/src/gui/windows/inventorywindow.h
@@ -152,6 +152,8 @@ class InventoryWindow final : public Window,
 
         void setVisible(bool visible) override final;
 
+        void unsetInventory();
+
         static bool isAnyInputFocused();
 
     private: