Make the RNG fall back to using an algorithm handle if BCryptGenRandom fails #330
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Based on rust-lang/rust#102044
Adresses #314, replaces #318
This doesn't have a fast-path to avoid
BCryptGenRandomif it is known to fail.Thus this is probably gonna get expensive for some users, I can add some fast-path though.
Right now I don't have a Windows machine to actually test it on (but CI should do that, I also have acess to a machine again next week).
I'm not 100% sure yet that it fixes the crashes we see on Firefox, but given the stdlib switched to a similar solution I have hopes.