default-reviewers: fixed problems with new diff format for more advanced default reviewer rules.

rhodecode/model/db.py

@@ -4962,7 +4962,9 b' class RepoReviewRule(Base, BaseModel):'
             else:
                 file_pattern = glob2re(self.file_pattern)
             file_regex = re.compile(file_pattern)
-            for filename in files_changed:
+            for file_data in files_changed:
+                filename = file_data.get('filename')
+
                 if file_regex.search(filename):
                     files_matches = True
                     break

rhodecode/model/pull_request.py

@@ -186,7 +186,7 b' def get_diff_info('
                     email = commit.author_email
                     user = User.get_from_cs_author(author)
                     if user:
-                        user_counts[user] = user_counts.get(user, 0) + 1
+                        user_counts[user.user_id] = user_counts.get(user.user_id, 0) + 1
                     author_counts[author] = author_counts.get(author, 0) + 1
                     email_counts[email] = email_counts.get(email, 0) + 1