[Issue 5621] speller.c: implement type inference in speller suggestion

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=5621

--- Comment #3 from Iain Buclaw <ibuclaw at gdcproject.org> ---
Maybe this was fixed by https://github.com/dlang/dmd/pull/4143

The compiler no longer offers spelling suggestion for the original test case.

--