Merge pull request #58 from mathworks/57-list-selector-two-pane-can-c…

…rash-matlab-due-to-highlightedvalue-being-empty-in-the-set-method

Update to widgets/+wt/ListSelectorTwoPane.m

widgets/+wt/ListSelectorTwoPane.m

@@ -485,8 +485,11 @@ function shiftListBoxIndex(obj, shift)
             else
                 value = obj.ItemsData(:,selIdx);
             end
-        end
+        end        
         function set.HighlightedValue(obj,value)
+            if isempty(value)
+                return;
+            end
             if isempty(obj.ItemsData)
                 [~, obj.RightList.Value] = ismember(value, obj.Items);
             else