Load author file during rcheckin

...because there is fetch of commit even during rcheckin command

GitTfs/Commands/Rcheckin.cs

@@ -19,18 +19,20 @@ namespace Sep.Git.Tfs.Commands
         private readonly CommitSpecificCheckinOptionsFactory _checkinOptionsFactory;
         private readonly TfsWriter _writer;
         private readonly Globals _globals;
+        private readonly AuthorsFile _authors;
 
         private bool Quick { get; set; }
         private bool AutoRebase { get; set; }
         private bool ForceCheckin { get; set; }
 
-        public Rcheckin(TextWriter stdout, CheckinOptions checkinOptions, TfsWriter writer, Globals globals)
+        public Rcheckin(TextWriter stdout, CheckinOptions checkinOptions, TfsWriter writer, Globals globals, AuthorsFile authors)
         {
             _stdout = stdout;
             _checkinOptions = checkinOptions;
             _checkinOptionsFactory = new CommitSpecificCheckinOptionsFactory(_stdout, globals);
             _writer = writer;
             _globals = globals;
+            _authors = authors;
         }
 
         public OptionSet OptionSet
@@ -53,6 +55,8 @@ namespace Sep.Git.Tfs.Commands
             if (_globals.Repository.IsBare)
                 throw new GitTfsException("error: you should specify the local branch to checkin for a bare repository.");
 
+            _authors.Parse(null, _globals.GitDir);
+
             return _writer.Write("HEAD", PerformRCheckin);
         }
 
@@ -62,6 +66,8 @@ namespace Sep.Git.Tfs.Commands
             if (!_globals.Repository.IsBare)
                 throw new GitTfsException("error: This syntax with one parameter is only allowed in bare repository.");
 
+            _authors.Parse(null, _globals.GitDir);
+
             return _writer.Write(GitRepository.ShortToLocalName(localBranch), PerformRCheckin);
         }