Fix AV in table editor for clicking right besides a node in a "no column" whitespace

source/table_editor.pas

@@ -964,7 +964,7 @@ begin
   end else begin
     // All other cells go into edit mode please
     // Explicitely done on OnClick, not in OnFocusChanged which seemed annoying for keyboard users
-    if Assigned(Click.HitNode) then
+    if Assigned(Click.HitNode) and (Click.HitColumn > NoColumn) then
       VT.EditNode(Click.HitNode, Click.HitColumn);
   end;
 end;