sftp: re-indented some minor stuff

src/sftp.c

@@ -1580,7 +1580,6 @@ static ssize_t sftp_read(LIBSSH2_SFTP_HANDLE * handle, char *buffer,
                     /* free the allocated data if not stored to keep */
                     LIBSSH2_FREE(session, data);
 
-
                 /* remove the chunk we just processed keeping track of the
                  * next one in case we need it */
                 next = _libssh2_list_next(&chunk->node);