Close the polygon if it isn't already. (To match gtk_draw_polygon)

Close the polygon if it isn't already. (To match gtk_draw_polygon)

Thu Jan 29 22:57:39 1998  Owen Taylor  <owt1@cornell.edu>

	* gtk/gtkstyle.c (gtk_default_draw_polygon): Close
	  the polygon if it isn't already. (To match gtk_draw_polygon)
	  Simplified logic. (Appearance could probably be
	  improved for objects with gradual curves by adding in
	  some intermediate edge coloration)