[PATCH] bcache: remove set but not used variable 'i'

[Wang Hai <wanghai38@huawei.com>]

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/md/bcache/btree.c: In function bch_btree_check_thread:
drivers/md/bcache/btree.c:1910:6: warning:
 variable ‘i’ set but not used [-Wunused-but-set-variable]

It's not used since commit 8e7102273f59 ("bcache: make bch_btree_check()
to be multithreaded"), so remove it.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wang Hai <wanghai38@huawei.com>
---
 drivers/md/bcache/btree.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/md/bcache/btree.c b/drivers/md/bcache/btree.c
index 72856e5..b962313 100644
--- a/drivers/md/bcache/btree.c
+++ b/drivers/md/bcache/btree.c
@@ -1907,10 +1907,10 @@ static int bch_btree_check_thread(void *arg)
 	struct btree_iter iter;
 	struct bkey *k, *p;
 	int cur_idx, prev_idx, skip_nr;
-	int i, n;
+	int n;
 
 	k = p = NULL;
-	i = n = 0;
+	n = 0;
 	cur_idx = prev_idx = 0;
 	ret = 0;
 
-- 
1.8.3.1