Fix previous commit: In calculating the length of a run, the width has to be updated AFTER the start X position has been modified.

drivers/lcd/lcd_framebuffer.c

@@ -201,8 +201,6 @@ static void lcdfb_update(FAR struct lcdfb_dev_s *priv,
       endx = priv->xres-1;
     }
 
-  width = endx - startx + 1;
-
   starty = rect->pt1.y;
   if (starty < 0)
     {
@@ -225,6 +223,8 @@ static void lcdfb_update(FAR struct lcdfb_dev_s *priv,
       startx &= ~(pixperbyte - 1);
     }
 
+  width = endx - startx + 1;
+
   /* Get the starting position in the framebuffer */
 
   run  = priv->fbmem + starty * priv->stride;