XBROWSE with EDIT_GET_LISTBOX

[byte-one]

In EDIT_GET_LISTBOX the text becomes the text from the first item of the listbox if i open the listbox. If i close the listbox without any click on a item, the text should be unchanged.
::aEditListTxt and ::aEditListBound should be the same if ::aEditListBound is not defined. And after this, the nAt from the Listbox should be searched. (at the moment, this are in a wrong order in the source from xbrowse)