set loopback color corrections on each iteration

modules/processing.py

@@ -339,6 +339,8 @@ def process_images(p: StableDiffusionProcessing) -> Processed:
 
             state.nextjob()
 
+        p.color_corrections = None
+
         unwanted_grid_because_of_img_count = len(output_images) < 2 and opts.grid_only_if_multiple
         if (opts.return_grid or opts.grid_save) and not p.do_not_save_grid and not unwanted_grid_because_of_img_count:
             grid = images.image_grid(output_images, p.batch_size)