Mumbai:HDFC Bank posted relatively modest second quarter profit growth at 4.7% as margin pressures and hardening bond yields in part offset the impact of accelerating asset and deposit growth. The lender will welcome a new chief executive this month, ending protracted uncertainty over succession.AgenciesStandalone net profit was 19,510 crore, up from 18,640 crore a year earlier, aided by higher net interest income (NII) and a swelling loan book.