fs: ubifs: Remove unnecessary assignment

Variable self assignment has been found by clang. But Linux kernel already
fixed this problem by commit 2a068daf5742 ("ubifs: Remove unnecessary
assignment") and commit ae4c8081eb77 ("ubifs: remove unnecessary
assignment").

Signed-off-by: Michal Simek <michal.simek@amd.com>
Reviewed-by: Alexander Dahl <ada@thorsis.com>
Reviewed-by: Michael Trimarchi <michael@amarulasolutions.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
diff --git a/fs/ubifs/recovery.c b/fs/ubifs/recovery.c
index 6b6884f..12c0575 100644
--- a/fs/ubifs/recovery.c
+++ b/fs/ubifs/recovery.c
@@ -439,7 +439,6 @@
 {
 	int empty_offs, pad_len;
 
-	lnum = lnum;
 	dbg_rcvry("cleaning corruption at %d:%d", lnum, *offs);
 
 	ubifs_assert(!(*offs & 7));
diff --git a/fs/ubifs/scan.c b/fs/ubifs/scan.c
index 7a6e46d..2335e9e 100644
--- a/fs/ubifs/scan.c
+++ b/fs/ubifs/scan.c
@@ -169,7 +169,6 @@
 void ubifs_end_scan(const struct ubifs_info *c, struct ubifs_scan_leb *sleb,
 		    int lnum, int offs)
 {
-	lnum = lnum;
 	dbg_scan("stop scanning LEB %d at offset %d", lnum, offs);
 	ubifs_assert(offs % c->min_io_size == 0);