[Issue 18161] std.algorithm.iteration.chunkBy should be usable in @safe

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18161

--- Comment #3 from Dlang Bot <dlang-bot at dlang.rocks> ---
dlang/phobos pull request #8213 "Partially solve issue 18161 - splitWhen and
most of chunkBy now @safe" was merged into master:

- 41355cd4e397e462902b24ac033ace7faba6e33b by Ate Eskola:
  Partially solve issue 18161. splitWhen and chunkBy when using forward ranges
is now safe

https://github.com/dlang/phobos/pull/8213

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