Update post_fmriprep.py

Define scrub_tag for the case that users want to compute scrub stats but without removing volumes

Author: pausz

post_fmriprep.py

@@ -419,7 +419,8 @@ def fmripop_save_params(args, params_dict):
     args = parser.parse_args()
     out_img = fmripop_remove_confounds(args)
     params_dict = vars(args)
-
+    
+    scrub_tag = ''
     if args.scrubbing:
         scrub_mask = fmripop_calculate_scrub_mask(args)
         scbper, scbl, ol = frmipop_calculate_scrub_stats(scrub_mask, args)