udf_bitmap_lookup never changes, so constify it

Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Cc: Jan Kara <jack@suse.cz>
---
 fs/udf/super.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/fs/udf/super.c b/fs/udf/super.c
index 3afe764..6bb2a5b 100644
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -1969,7 +1969,7 @@ static int udf_statfs(struct dentry *dentry, struct kstatfs *buf)
 	return 0;
 }
 
-static unsigned char udf_bitmap_lookup[16] = {
+static const unsigned char udf_bitmap_lookup[16] = {
 	0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4
 };
 
-- 
1.5.3.7

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