fix not define

app_onediff.py

@@ -85,10 +85,11 @@ def create_demo() -> gr.Blocks:
         steps:int,
     ):
         global compiled_pipe
+        compiled_pipe = base_pipe
         run_task_time = 0
         time_cost_str = ''
         run_task_time, time_cost_str = get_time_cost(run_task_time, time_cost_str)
-        if not compiled_pipe:
+        if id(compiled_pipe) == id(base_pipe):
             print("---------->Recompile<----------")
             compiled_pipe = nexfort_compile(base_pipe)
         generated_image = compiled_pipe(