Merge pull request #92 from jhass/ghpr_ignore_failed

Ignore failed pull request comments

lib/pronto/formatter/github_pull_request_formatter.rb

@@ -24,6 +24,13 @@ def create_comment(client, sha, body, path, position)
         comments = client.pull_comments(sha)
         existing = comments.any? { |c| comment == c }
         client.create_pull_comment(comment) unless existing
+      rescue Octokit::UnprocessableEntity => e
+        # The diff output of the local git version and Github is not always
+        # consistent, especially in areas where file renames happened, Github
+        # tends to recognize these better, leading to messages we can't post
+        # because their diff position is non-existent on Github.
+        # Ignore such occasions and continue posting other messages.
+        STDERR.puts "Failed to post: #{comment.inspect} with #{e.message}"
       end
     end
   end