Disable 5-second delay between comment postings when --dry-run is spe…

…cified.

migrateissues.py

@@ -147,14 +147,15 @@ def add_comments_to_issue(github_issue, gcode_issue):
             if not options.dry_run:
                 topost = topost.encode('utf-8')
                 github_issue.create_comment(topost)
+
+                # We use a delay to avoid comments being created on GitHub
+                # in the wrong order, due to network non-determinism.
+                # Without this delay, I consistently observed a full 1 in 3
+                # GoogleCode issue comments being reordered.
+                # XXX: querying GitHub in a loop to see when the comment has
+                # been posted may be faster, but will cut into the rate limit.
+                time.sleep(5)
             output('.')
-            # We use a delay to avoid comments being created on GitHub
-            # in the wrong order, due to network non-determinism.
-            # Without this delay, I consistently observed a full 1 in 3
-            # GoogleCode issue comments being reordered.
-            # XXX: querying GitHub in a loop to see when the comment has
-            # been posted may be faster, but will cut into the rate limit.
-            time.sleep(5)
 
 def get_attachments(link, attachments):
     if not attachments: