[syslinux] small patch for core/fs/diskio.c to remove redundant register write

[Don Hiatt]

The disk number is set twice in diskio.c/edd_rdwr_sectors() this patch
removes the redundant setting.

diff --git a/core/fs/diskio.c b/core/fs/diskio.c
index 481b59b..38d3da3 100644
--- a/core/fs/diskio.c
+++ b/core/fs/diskio.c
@@ -163,8 +163,6 @@ static int edd_rdwr_sectors(struct disk *disk, void
*buf,
 
     memset(&reset, 0, sizeof reset);
 
-    ireg.edx.b[0] = disk->disk_number;
-
     lba += disk->part_start;
     while (count) {
 	chunk = count;

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