Which of the following irregularities of a Magistrate not empowered by law to do so, does not vitiate the proceedings:
1
calling of record to exercise powers of revision under Section 397 of Code of Criminal Procedure
2
taking cognizance of an offence under clause (a) or clause (b) of subsection (1) of Section 190 of Code of Criminal Procedure
3
decision of an appeal
4
revision of an order passed under section 466 of Code of Criminal Procedure