Can brought forward stcl be set-off agianst stcg after the due date

Assessee met with an accident.Hence could not file the return before 5.8.2017 being the due date.But filed the reutrn on 19.12.2017 and the said fact was duely disclosed in the footnote. In such a situtation will the Brought forward Short Term Capital Loss be allowed to set-off agianst Short Term Capital Gain?