btrfs-progs: convert: use correct string printing for errcode_t

Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/convert/source-ext2.c b/convert/source-ext2.c
index 44d5e3a..e927721 100644 (file)
--- a/convert/source-ext2.c
+++ b/convert/source-ext2.c
@@ -155,7 +155,8 @@ static int ext2_read_used_space(struct btrfs_convert_context *cctx)
                                                block_nbytes * 8, block_bitmap);
                if (ret) {
                        error("fail to get bitmap from ext2, %s",
-                             strerror(-ret));
+                               error_message(ret));
+                       ret = -EINVAL;
                        break;
                }
                ret = __ext2_add_one_block(fs, block_bitmap, i, used_tree);