release script: fix compile warnings
release script: fix compile warnings

achernyak/stack,deech/stack,MichielDerhaeg/stack,MichielDerhaeg/stack,vigoo/stack,luigy/stack,keent/stack,juhp/stack,narrative/stack,phadej/stack,Blaisorblade/stack,mrkkrp/stack,Fuuzetsu/stack,AndrewRademacher/stack,mrkkrp/stack,vigoo/stack,harendra-kumar/stack,sjakobi/stack,rvion/stack,martin-kolinek/stack,achernyak/stack,AndrewRademacher/stack,deech/stack,phadej/stack,Heather/stack,rvion/stack,martin-kolinek/stack,anton-dessiatov/stack,luigy/stack,Fuuzetsu/stack,juhp/stack,sjakobi/stack,narrative/stack,rubik/stack,AndreasPK/stack,keent/stack,Blaisorblade/stack,AndreasPK/stack,rubik/stack,Heather/stack,harendra-kumar/stack,anton-dessiatov/stack