[Issue 24789] Disallow body-less, non-extern, local functions

[d-bugmail--- via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=24789

--- Comment #1 from basile-z <b2.t...@gmx.com> ---
local body-less **non-extern** funcdecls have no use.

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