@const_eval returns poison value for type when it fails
@const_eval returns poison value for type when it fails

resulting in fewer redundant error messages

raulgrell/zig,raulgrell/zig,Dimenus/zig,andrewrk/zig,zig-lang/zig,zig-lang/zig,andrewrk/zig,raulgrell/zig,zig-lang/zig,Dimenus/zig,Dimenus/zig,raulgrell/zig,raulgrell/zig