Btrfs-progs: don't try to repair reloc roots

We have logic to fix the root locations for roots in response to a corruption
bug we had earlier.  However this work doesn't apply to reloc roots and can
screw things up worse, so make sure we skip any reloc roots that we find.
Thanks,

Signed-off-by: Josef Bacik <jbacik@fb.com>

cmds-check.c

@@ -8886,6 +8886,8 @@ again:
 
 		if (found_key.type != BTRFS_ROOT_ITEM_KEY)
 			goto next;
+		if (found_key.objectid == BTRFS_TREE_RELOC_OBJECTID)
+			goto next;
 
 		ret = maybe_repair_root_item(info, path, &found_key,
 					     trans ? 0 : 1);