This fixes a typo in the commit selection combobox that prevented it
from working properly, and sets the width of the widget. This also
fixes show_error to handle errors arising before the gui is fully
configured (ie: invalid command line parameters)
Signed-off-by: Pat Thoyts <patthoyts@users.sourceforge.net> Signed-off-by: Paul Mackerras <paulus@samba.org>