please provide the table name when compare failed

[knull-cn]

Feature Request

Is your feature request related to a problem? Please describe:

there was no table name in log, difficult to locate problem
https://github.com/pingcap/tidb-tools/blob/master/sync_diff_inspector/diff.go#L575

log.Fatal("the isEqual1 and isEqual2 cannot be both true")

Describe the feature you'd like:

add table name into the log

Describe alternatives you've considered:

Teachability, Documentation, Adoption, Migration Strategy:

[knull-cn]

/found gs