When the chairman of any county governing body who should have signed the records of the proceedings of any meeting of the governing body has died, moved from the county, completed his term of office or for any other reason become incapacitated to perform the duties of his office, without having signed such records, the governing body shall have such records read at a regular meeting and if no error appears shall direct its then chairman to sign such record. The governing body shall thereupon enter on its records the fact of such reading and signing. Such records, when so signed, shall be as valid as if they had been signed by the chairman who presided at the time when such order or orders were made.