fixed bug in myisamchk -R mode

myisam/mi_check.c:
  cleanups

myisam/mi_check.c

@@ -2947,14 +2947,12 @@ int sort_write_record(MI_SORT_PARAM *sort_param)
   ulong block_length,reclength;
   byte *from;
   byte block_buff[8];
-  MI_INFO *info;
   SORT_INFO *sort_info=sort_param->sort_info;
-  MYISAM_SHARE *share;
   MI_CHECK *param=sort_info->param;
+  MI_INFO *info=sort_info->info;
+  MYISAM_SHARE *share=info->s;
   DBUG_ENTER("sort_write_record");
 
-  info=sort_info->info;
-  share=info->s;
   if (sort_param->fix_datafile)
   {
     switch (sort_info->new_data_file_type) {

myisam/myisamchk.c

@@ -72,7 +72,7 @@ static void descript(MI_CHECK *param, register MI_INFO *info, my_string name);
 static int mi_sort_records(MI_CHECK *param, register MI_INFO *info,
                            my_string name, uint sort_key,
 			   my_bool write_info, my_bool update_index);
-static int sort_record_index(MI_SORT_PARAM *sort_param,MI_INFO *info,
+static int sort_record_index(MI_SORT_PARAM *sort_param, MI_INFO *info,
                              MI_KEYDEF *keyinfo,
 			     my_off_t page,uchar *buff,uint sortkey,
 			     File new_file, my_bool update_index);
@@ -1470,6 +1470,7 @@ static int mi_sort_records(MI_CHECK *param,
   sort_info.info=info;
   sort_info.new_data_file_type=share->data_file_type;
   sort_param.fix_datafile=1;
+  sort_param.master=1;
   sort_param.filepos=share->pack.header_length;
   old_record_count=info->state->records;
   info->state->records=0;