jbd2: Fix memory leak when verifying checksums in the journal

Cc: Andreas Dilger <adilger@clusterfs.com>
Cc: Girish Shilamkar <girish@clusterfs.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

fs/jbd2/recovery.c

@@ -344,6 +344,7 @@ static int calc_chksums(journal_t *journal, struct buffer_head *bh,
 			*crc32_sum = crc32_be(*crc32_sum, (void *)obh->b_data,
 				     obh->b_size);
 		}
+		put_bh(obh);
 	}
 	return 0;
 }