Btrfs: 32bit cleanups

Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/print-tree.c b/fs/btrfs/print-tree.c
index 1d59127..a9a1422 100644
--- a/fs/btrfs/print-tree.c
+++ b/fs/btrfs/print-tree.c
@@ -43,7 +43,7 @@
 		print_leaf((struct leaf *)c);
 		return;
 	}
-	printf("node %Lu level %d total ptrs %d free spc %lu\n", t->blocknr,
+	printf("node %Lu level %d total ptrs %d free spc %u\n", t->blocknr,
 	        node_level(c->header.flags), c->header.nritems,
 		NODEPTRS_PER_BLOCK - c->header.nritems);
 	fflush(stdout);