ext4: treat buffers contining write errors as valid in ext4_sb_bread()

In commit 7963e5ac9012 ("ext4: treat buffers with write errors as
containing valid data") we missed changing ext4_sb_bread() to use
ext4_buffer_uptodate().  So fix this oversight.

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 2937a88..c3d66bb 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -154,7 +154,7 @@
 
 	if (bh == NULL)
 		return ERR_PTR(-ENOMEM);
-	if (buffer_uptodate(bh))
+	if (ext4_buffer_uptodate(bh))
 		return bh;
 	ll_rw_block(REQ_OP_READ, REQ_META | op_flags, 1, &bh);
 	wait_on_buffer(bh);