bug#61504: 29.0.60; executing byte-code from previous build causes SIGSEGV crash

[Stefan Monnier]

>> By the way, doesn't the patch switch the restoration order of narrowing
>> and restriction, respectively? Maybe it doesn't matter?
> Hmmm, that's a good question!  The evaluation order of parameters is
> unspecified in C,

The problem is not in the evaluation order of params in
`save_restriction_save` (this order doesn't matter because the code is
pure), it's in `+save_restriction_restore`.


        Stefan