btrfs-progs: fix build

Closes #12624

srcpkgs/btrfs-progs/patches/btrfs-progs-convert-ext2-Remove-check-for-ext2_ext_attr_entry--e_value_block.patch

@@ -0,0 +1,14 @@
+diff --git a/convert/source-ext2.c b/convert/source-ext2.c
+index b1492c78693d..070126ec38ec 100644
+--- convert/source-ext2.c
++++ convert/source-ext2.c
+@@ -422,8 +422,7 @@ static int ext2_xattr_check_entry(struct ext2_ext_attr_entry *entry,
+ {
+ 	size_t value_size = entry->e_value_size;
+ 
+-	if (entry->e_value_block != 0 || value_size > size ||
+-	    entry->e_value_offs + value_size > size)
++	if (value_size > size || entry->e_value_offs + value_size > size)
+ 		return -EIO;
+ 	return 0;
+ }