A value assigned to a variable is never used.

Defect 114082 (STATIC_C)
Checker UNUSED_VALUE (subcategory none)
File: /src/txn/txn_rollback_to_stable.c
Function __rollback_row_ondisk_fixup_key
/src/txn/txn_rollback_to_stable.c, line: 236
Assigning value from "hs_start_ts" to "newer_hs_ts" here, but that stored value is not used.

            newer_hs_ts = hs_start_ts;