pycardium: ctx: Flush drawlist

pycardium/modules/ctx.c

@@ -370,6 +370,14 @@ static mp_obj_t mp_ctx_update(mp_obj_t self_in, mp_obj_t display_in)
 	}
 
 	int res = epic_disp_ctx(self->ctx);
+
+	/*
+	 * The drawlist still contains the draw commands which were just
+	 * executed.  Flush them now.
+	 */
+	ctx_drawlist_clear(self->ctx);
+
+	/* report errors from epic_disp_ctx() */
 	if (res < 0) {
 		mp_raise_OSError(-res);
 	}