[Issue 19207] std.algorithm.subsitute wrong results for single subrange substitution

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19207

--- Comment #2 from github-bugzilla at puremagic.com ---
Commit pushed to master at https://github.com/dlang/phobos

https://github.com/dlang/phobos/commit/82c73711a590d5757951b8aea3c20b842c043e71
fix issue 19207

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