Flush display events after dispatching

NB: slight speedup in fps.

Signed-off-by: Chris Michael <cp.michael@samsung.com>

src/bin/engine_wayland_egl.c

@@ -82,6 +82,7 @@ void
 engine_wayland_egl_loop(void)
 {
    assert(wl_display_dispatch_pending(wl.display) != -1);
+   wl_display_flush(wl.display);
 }
 
 void