Return empty byte array when EOF status response is received.

src/Renci.SshNet/Sftp/SftpSession.cs

@@ -344,6 +344,7 @@ namespace Renci.SshNet.Sftp
                             {
                                 exception = GetSftpException(response);
                             }
+                            data = Array<byte>.Empty;
                             wait.Set();
                         });