#1426 / #1432: fix html5 scrolling (used wrong vertical offset value …

…- doh)

git-svn-id: https://xpra.org/svn/Xpra/trunk@15275 3bb7dfac-3a0b-4e04-842a-767bc560f471

src/html5/js/Window.js

@@ -1049,7 +1049,7 @@ XpraWindow.prototype.do_paint = function paint(x, y, width, height, coding, img_
 				sh = scroll_data[3],
 				xdelta = scroll_data[4],
 				ydelta = scroll_data[5];
-			this.offscreen_canvas_ctx.drawImage(this.offscreen_canvas, sx, sy, sw, sh, sx+xdelta, y+ydelta, sw, sh);
+			this.offscreen_canvas_ctx.drawImage(this.offscreen_canvas, sx, sy, sw, sh, sx+xdelta, sy+ydelta, sw, sh);
 		}
 		painted();
 	}