Do not play games with the instruction fetch pointers when preserving a process state in sendsig(), for it must be restored in the exact same fetching state by sigreturn().
Do not play games with the instruction fetch pointers when preserving a
process state in sendsig(), for it must be restored in the exact same fetching
state by sigreturn().

mvme88k now passes the sigreturn regression test.

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars