fix generated_prompt not defined

app.py

@@ -128,7 +128,7 @@ with gr.Blocks(css=css) as demo:
 
             result = gr.Image(label="Result", show_label=False)
 
-            if generated_prompt:
+            if result:
                 gr.Markdown("## Description of the garment:")
             generated_prompt = gr.Markdown("")