udf: Fix compilation with UDFFS_DEBUG enabled

Signed-off-by: Jan Kara <jack@suse.cz>
diff --git a/fs/udf/balloc.c b/fs/udf/balloc.c
index 1e06853..82372e3 100644
--- a/fs/udf/balloc.c
+++ b/fs/udf/balloc.c
@@ -440,7 +440,7 @@
 	    (bloc->logicalBlockNum + count) >
 		partmap->s_partition_len) {
 		udf_debug("%d < %d || %d + %d > %d\n",
-			  bloc.logicalBlockNum, 0, bloc.logicalBlockNum, count,
+			  bloc->logicalBlockNum, 0, bloc->logicalBlockNum, count,
 			  partmap->s_partition_len);
 		goto error_return;
 	}