[Issue 19946] In betterC filling an array with a non-zero value fails for types of size > 1 due to missing _memset16/_memset32/etc.

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19946
Issue 19946 depends on issue 21750, which changed state.

Issue 21750 Summary: -betterC undefined reference to _memsetn
https://issues.dlang.org/show_bug.cgi?id=21750

           What    |Removed                     |Added
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             Status|NEW                         |RESOLVED
         Resolution|---                         |DUPLICATE

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