Fix "masked content" in loopback script

The loopback script did not set masked content to original after first loop. So each loop would apply a fill, or latent mask. This would essentially reset progress each loop.

The desired behavior is to use the mask for the first loop, then continue to iterate on the results of the previous loop.

scripts/loopback.py

@@ -42,6 +42,7 @@ class Script(scripts.Script):
         all_images = []
         original_init_image = p.init_images
         original_prompt = p.prompt
+        original_inpainting_fill = p.inpainting_fill
         state.job_count = loops * batch_count
 
         initial_color_corrections = [processing.setup_color_correction(p.init_images[0])]
@@ -112,6 +113,7 @@ class Script(scripts.Script):
 
                 last_image = processed.images[0]
                 p.init_images = [last_image]
+                p.inpainting_fill = 1 # Set "masked content" to "original" for next loop.
 
                 if batch_count == 1:
                     history.append(last_image)
@@ -121,6 +123,8 @@ class Script(scripts.Script):
                 history.append(last_image)
                 all_images.append(last_image)
 
+            p.inpainting_fill = original_inpainting_fill
+                
             if state.interrupted:
                     break