[Issue 15197] Allow allocator_list to work with allocators that do not support `expand()`

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=15197

--- Comment #3 from github-bugzi...@puremagic.com ---
Commit pushed to master at https://github.com/D-Programming-Language/phobos

https://github.com/D-Programming-Language/phobos/commit/275cad39c14a8b18ff7f141647c3b0820c8b14ac
Merge pull request #3689 from economicmodeling/allocator-list-without-expand

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