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Subject[patch] btrfs: scrub: silence an uninitialized variable warning
It's basically harmless if "ref_level" isn't initialized since it's only
used for an error message, but it causes a static checker warning.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>

diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index e42aa27..39dbdcb 100644
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -611,7 +611,7 @@ static void scrub_print_warning(const char *errstr, struct scrub_block *sblock)
u64 flags = 0;
u64 ref_root;
u32 item_size;
- u8 ref_level;
+ u8 ref_level = 0;
int ret;

WARN_ON(sblock->page_count < 1);
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