do not force relative paths in image history

modules/images_history.py

@@ -104,7 +104,7 @@ def show_images_history(gr, opts, tabname, run_pnginfo, switch_dict):
     elif tabname == "extras":
         dir_name = opts.outdir_extras_samples
     d = dir_name.split("/")
-    dir_name = d[0]
+    dir_name = "/" if dir_name.startswith("/") else d[0]
     for p in d[1:]:
         dir_name = os.path.join(dir_name, p)
     with gr.Row():