compositor: don't handle size or viewport src change in surface_update_damage()

This is incorrectly leads to buffer reuploading.

types/wlr_compositor.c

@@ -249,13 +249,6 @@ static void surface_update_damage(pixman_region32_t *buffer_damage,
 		struct wlr_surface_state *current, struct wlr_surface_state *pending) {
 	pixman_region32_clear(buffer_damage);
 
-	if (pending->width != current->width ||
-			pending->height != current->height ||
-			!wlr_fbox_equal(&pending->viewport.src, &current->viewport.src)) {
-		// Damage the whole buffer on resize or viewport source box change
-		pixman_region32_union_rect(buffer_damage, buffer_damage, 0, 0,
-			pending->buffer_width, pending->buffer_height);
-	} else {
 	// Copy over surface damage + buffer damage
 	pixman_region32_t surface_damage;
 	pixman_region32_init(&surface_damage);
@@ -290,7 +283,6 @@ static void surface_update_damage(pixman_region32_t *buffer_damage,
 
 	pixman_region32_fini(&surface_damage);
 }
-}
 
 static void *surface_synced_create_state(struct wlr_surface_synced *synced) {
 	void *state = calloc(1, synced->impl->state_size);