fix logic of rescue.

lib/github_changelog_generator.rb

@@ -93,12 +93,8 @@ module GitHubChangelogGenerator
             if event[:commit_id].nil?
               issue[:actual_date] = issue[:closed_at]
             else
-              begin
               begin
                 commit = @github.git_data.commits.get @options[:user], @options[:project], event[:commit_id]
-                rescue
-                  puts GH_RATE_LIMIT_EXCEEDED_MSG.yellow
-                end
                 issue[:actual_date] = commit[:author][:date]
               rescue
                 puts "Warning: can't fetch commit #{event[:commit_id]} probably it referenced from another repo.".yellow