Xephyr: Fix screen image draw for the non-Glamor & non-XHSM case

xcb_image_put() prints the entire image, therefore don't use an offset.

Signed-off-by: Egbert Eich <eich@freedesktop.org>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
(cherry picked from commit c65eda5e66)

hw/kdrive/ephyr/hostx.c

@@ -1035,7 +1035,7 @@ hostx_paint_rect(KdScreenInfo *screen,
     }
     else {
         xcb_image_put(HostX.conn, scrpriv->win, HostX.gc, scrpriv->ximg,
-                      dx, dy, 0);
+                      0, 0, 0);
     }
 
     xcb_aux_sync(HostX.conn);