No changes, just slightly simplify the tool insertion code.

Added a helper DoInsertNewTool() function to avoid code duplication and ensure
that we never forget to delete a new tool if inserting it into the toolbar
failed.

Also explicitly document that the tool passed to the public InsertTool() is
not owned by the toolbar and so must be deleted by the caller if its insertion
failed.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@62846 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/tbarbase.h

@@ -608,6 +608,17 @@ protected:
     // make the size of the buttons big enough to fit the largest bitmap size
     void AdjustToolBitmapSize();
 
+    // calls InsertTool() and deletes the tool if inserting it failed
+    wxToolBarToolBase *DoInsertNewTool(size_t pos, wxToolBarToolBase *tool)
+    {
+        if ( !InsertTool(pos, tool) )
+        {
+            delete tool;
+            return NULL;
+        }
+
+        return tool;
+    }
 
     // the list of all our tools
     wxToolBarToolsList m_tools;