[Issue 15853] std.random save methods must be const

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=15853

Nathan S. <n8sh.secondary at hotmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |n8sh.secondary at hotmail.com

--- Comment #8 from Nathan S. <n8sh.secondary at hotmail.com> ---
Revived PR: https://github.com/dlang/phobos/pull/6857

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