SimRegArg._fix_offset() now also takes an arch.
SimRegArg._fix_offset() now also takes an arch.

angr/angr,angr/angr,iamahuman/angr,angr/angr,schieb/angr,schieb/angr,schieb/angr,tyb0807/angr,tyb0807/angr,iamahuman/angr,tyb0807/angr,iamahuman/angr