window: Request version 3 of wl_compositor

Originally window.c was requesting version 1 but several clients were
calling version 2 and 3 events including the desktop shell itself.

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
diff --git a/clients/window.c b/clients/window.c
index c8e421b..cff7102 100644
--- a/clients/window.c
+++ b/clients/window.c
@@ -4751,7 +4751,7 @@
 
 	if (strcmp(interface, "wl_compositor") == 0) {
 		d->compositor = wl_registry_bind(registry, id,
-						 &wl_compositor_interface, 1);
+						 &wl_compositor_interface, 3);
 	} else if (strcmp(interface, "wl_output") == 0) {
 		display_add_output(d, id);
 	} else if (strcmp(interface, "wl_seat") == 0) {