No harm

exp.

Heard in Kilkenny

All right, acceptable, or yes (often with a note of reservation).

In use

Well lad you comin' down to down 2 Lalors for a few jars?" "Sure it would be no harm

Posh English

I say, dear boy, will you be descending to Lalor's establishment for several tankards? One supposes it would do no lasting damage.