Fix MSVC 14.1 complaining about "attempting to reference a deleted function" in RenderPassClearValue

[jsjtxietian]

Fixes #86443

We could also add something like new (&color) Color() inside the ctor, but it doesn't seems very necessary.

[RandomShaper]

What does it happen if instead of that change, the initializer is removed from Color, that, after all, zero-initializes internally?

[jsjtxietian]

zero-initializes internally

@RandomShaper Sorry I don't quite understand, where do we put the zero-initializes? In the constructor?

https://godbolt.org/z/5qGvGcof8

[clayjohn]

What does it happen if instead of that change, the initializer is removed from Color, that, after all, zero-initializes internally?

@RandomShaper Still doesn't work because Color doesn't have a trivial constructor (at least that's what the error message says)

[clayjohn]

Seems fine to me. @RandomShaper should have a chance to take another look before merging

[RandomShaper]

Oh, I see. The compiler deletes the constructor to be safe, so an explicit constructor is needed. Makes sense! My only (soft) suggestion now would be to use the = default syntax, but I'm fine with either.

[jsjtxietian]

My only (soft) suggestion now would be to use the = default syntax, but I'm fine with either.

lol that won't work too. see https://godbolt.org/z/TY34Ph54G

So I guess it should stay as it is now

[akien-mga]

Thanks!