fs/reiserfs/lbalance.c: remove set but not used variables

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

fs/reiserfs/lbalance.c: In function leaf_paste_entries:
fs/reiserfs/lbalance.c:1325:9: warning: variable old_entry_num set but not used [-Wunused-but-set-variable]

Link: http://lkml.kernel.org/r/1566379929-118398-4-git-send-email-zhengbin13@huawei.comSigned-off-by: zhengbin <zhengbin13@huawei.com>
Reported-by: Hulk Robot <hulkci@huawei.com>
Cc: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/reiserfs/lbalance.c

@@ -1322,7 +1322,7 @@ void leaf_paste_entries(struct buffer_info *bi,
 	char *item;
 	struct reiserfs_de_head *deh;
 	char *insert_point;
-	int i, old_entry_num;
+	int i;
 	struct buffer_head *bh = bi->bi_bh;
 
 	if (new_entry_count == 0)
@@ -1362,7 +1362,6 @@ void leaf_paste_entries(struct buffer_info *bi,
 		put_deh_location(&deh[i],
 				 deh_location(&deh[i]) + paste_size);
 
-	old_entry_num = ih_entry_count(ih);
 	put_ih_entry_count(ih, ih_entry_count(ih) + new_entry_count);
 
 	/* prepare space for pasted records */