improved logic in forget

src/restic/forget.py

@@ -86,9 +86,12 @@ def main(loki_url: str, dry_run: bool, **kwargs):
     except Exception:
         console.print_exception()
     else:
-        snapshots.snapshot(loki_url)
         prune(loki_url, dry_run)
+        if not dry_run:
+            snapshots.snapshot(loki_url)
             size.get_size(loki_url)
+        else:
+            logger.debug('Skipping getting size because of dry run')
 
 
 if __name__ == '__main__':