hash.d: make .ptr @safe

[WalterBright]

Blocking dlang/dmd#5860

[dnadlinger]

This is a bit of a nonsensical change – the code can't possibly be @safe, since it uses a pointer/length API. bytesHash is mistakenly marked as trusted. Rather than entertaining this any further, it would have been better just to remove @safe from the unit test.

[WalterBright]

@klickverbot You're right, I'll look into a revision. But in the meantime, this is no longer a blocker.

[dnadlinger]

I generally agree with short-term fixes to get blockers out of the way, but not if the proper fix takes exactly the same amount of effort. :)

[WalterBright]

#1627

[dnadlinger]

Thanks!