rem: if ((column < 0) || (column > bPtr->columnCount))
add: if ((column < 0) || (column >= bPtr->usedColumnCount))
context: WMGetBrowserSelectedItemInColumn(WMBrowser *bPtr, int column){    if ((column < 0) || (column > bPtr->columnCount))	return NULL;    return WMGetListSelectedItem(bPtr->columns[column]);}