STORM-530 FIXED Combobox drop down menu appears upon 'Down Arrow' key press...

STORM-530 FIXED Combobox drop down menu appears upon 'Down Arrow' key press even if last combobox item is selected.

indra/llui/llcombobox.cpp

@@ -769,7 +769,7 @@ BOOL LLComboBox::handleKeyHere(KEY key, MASK mask)
 			return FALSE;
 		}
 		// if selection has changed, pop open list
-		else if (mList->getLastSelectedItem() != last_selected_item)
+		else
 		{
 			showList();
 		}