Move extra roundtrip into password.c

swaylock/password.c

@@ -101,6 +101,7 @@ void swaylock_handle_key(struct swaylock_state *state,
 		case XKB_KEY_Return:
 			state->auth_state = AUTH_STATE_VALIDATING;
 			render_frames(state);
+			wl_display_roundtrip(state->display);
 			if (attempt_password(&state->password)) {
 				exit(0);
 			}

swaylock/render.c

@@ -134,7 +134,6 @@ void render_frame(struct swaylock_surface *surface) {
 	wl_surface_attach(surface->surface, surface->current_buffer->buffer, 0, 0);
 	wl_surface_damage(surface->surface, 0, 0, buffer_width, buffer_height);
 	wl_surface_commit(surface->surface);
-	wl_display_roundtrip(state->display);
 }
 
 void render_frames(struct swaylock_state *state) {