Fix auto resize when month has 6 weeks.
Fix auto resize when month has 6 weeks.

2947721120/bootstrap-material-datetimepicker,beenote/angular-material-datetimepicker,logbon72/angular-material-datetimepicker,T00rk/bootstrap-material-datetimepicker,beenote/angular-material-datetimepicker,logbon72/angular-material-datetimepicker,miamarti/Material-DateTimePicker,perdona/bootstrap-material-datetimepicker,miamarti/Material-DateTimePicker