fs/reiserfs/journal.c: delete useless variables

The value of 'cn' is not used, so just delete it.

Link: https://lore.kernel.org/r/1618278196-17749-1-git-send-email-tiantao6@hisilicon.com
Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Signed-off-by: Jan Kara <jack@suse.cz>

Author: Tian Tao

fs/reiserfs/journal.c

@@ -461,7 +461,6 @@ int reiserfs_in_journal(struct super_block *sb,
 			b_blocknr_t * next_zero_bit)
 {
 	struct reiserfs_journal *journal = SB_JOURNAL(sb);
-	struct reiserfs_journal_cnode *cn;
 	struct reiserfs_list_bitmap *jb;
 	int i;
 	unsigned long bl;
@@ -497,13 +496,12 @@ int reiserfs_in_journal(struct super_block *sb,
 	bl = bmap_nr * (sb->s_blocksize << 3) + bit_nr;
 	/* is it in any old transactions? */
 	if (search_all
-	    && (cn =
-		get_journal_hash_dev(sb, journal->j_list_hash_table, bl))) {
+	    && (get_journal_hash_dev(sb, journal->j_list_hash_table, bl))) {
 		return 1;
 	}
 
 	/* is it in the current transaction.  This should never happen */
-	if ((cn = get_journal_hash_dev(sb, journal->j_hash_table, bl))) {
+	if ((get_journal_hash_dev(sb, journal->j_hash_table, bl))) {
 		BUG();
 		return 1;
 	}