PATCH: Fix for gtk_paint_shadow_gap.

["Craig M. Buchek" <gnome buchek com>]

I've been trying to make a version of Frame in which the label can be placed on any side.  I found a bug in the default implementations of
gtk_paint_shadow_gap and gtk_paint_box_gap.  When the gap is on one of the sides, it still figures the position of the gap using the width
of the box instead of the height.  A patch to fix the problem follows.

--- gtkstyle.c.original	Tue Mar 14 13:57:24 2000
+++ gtkstyle.c	Mon Apr 17 18:50:12 2000
@@ -2525,7 +2525,7 @@
               gdk_draw_line (window, gc2,
                              x, y + gap_x, x, y + gap_x);
             }
-          if ((width - (gap_x + gap_width)) > 0)
+          if ((height - (gap_x + gap_width)) > 0)
             {
               gdk_draw_line (window, gc1,
                              x, y + gap_x + gap_width, x, y + height - 2);
@@ -2558,7 +2558,7 @@
               gdk_draw_line (window, gc3,
                              x + width - 1, y + gap_x, x + width - 1, y + gap_x);
             }
-          if ((width - (gap_x + gap_width)) > 0)
+          if ((height - (gap_x + gap_width)) > 0)
             {
               gdk_draw_line (window, gc4,
                              x + width - 1, y + gap_x + gap_width, x + width - 1, y + height - 2);
@@ -2751,7 +2751,7 @@
               gdk_draw_line (window, gc2,
                              x, y + gap_x, x, y + gap_x);
             }
-          if ((width - (gap_x + gap_width)) > 0)
+          if ((height - (gap_x + gap_width)) > 0)
             {
               gdk_draw_line (window, gc1,
                              x, y + gap_x + gap_width, x, y + height - 2);
@@ -2784,7 +2784,7 @@
               gdk_draw_line (window, gc3,
                              x + width - 1, y + gap_x, x + width - 1, y + gap_x);
             }
-          if ((width - (gap_x + gap_width)) > 0)
+          if ((height - (gap_x + gap_width)) > 0)
             {
               gdk_draw_line (window, gc4,
                              x + width - 1, y + gap_x + gap_width, x + width - 1, y + height - 2);