Fix template parameter

[Dom Disc]

On Monday, 8 August 2022 at 12:46:48 UTC, bauss wrote:
> On Monday, 8 August 2022 at 12:02:02 UTC, Dom Disc wrote:
>>
>> ```D
>> pure @nogc @safe BigInt opAssign(T : BigInt)(T x);
>> ```
>
> This will only be included in the object file if used.
>
>> ```D
>> pure @nogc @safe BigInt opAssign(BigInt x);
>> ```
>
> This will always be in the object file.

Ah, ok. But shouldn't the linker throw it out of an executable, 
if it is not used?
I mean, even the most dump linker should be able to do this basic 
optimization...