[PATCH] ubi: wl: remove set but not used variable 'prev_e'

[yu kuai]

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

drivers/mtd/ubi/wl.c: In function âfind_wl_entryâ:
drivers/mtd/ubi/wl.c:322:27: warning: variable âprev_eâ set but not
used [-Wunused-but-set-variable]

It is never used, and so can be removed.

Signed-off-by: yu kuai <yukuai3@xxxxxxxxxx>
---
 drivers/mtd/ubi/wl.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c
index 5d77a38dba54..837d690a8c60 100644
--- a/drivers/mtd/ubi/wl.c
+++ b/drivers/mtd/ubi/wl.c
@@ -319,7 +319,7 @@ static struct ubi_wl_entry *find_wl_entry(struct ubi_device *ubi,
 					  struct rb_root *root, int diff)
 {
 	struct rb_node *p;
-	struct ubi_wl_entry *e, *prev_e = NULL;
+	struct ubi_wl_entry *e;
 	int max;
 
 	e = rb_entry(rb_first(root), struct ubi_wl_entry, u.rb);
@@ -334,7 +334,6 @@ static struct ubi_wl_entry *find_wl_entry(struct ubi_device *ubi,
 			p = p->rb_left;
 		else {
 			p = p->rb_right;
-			prev_e = e;
 			e = e1;
 		}
 	}
-- 
2.17.2