games/punchy: unbreak build after fa874813

error[E0080]: evaluation of constant value failed
    --> cargo-crates/v8-0.47.1/src/isolate.rs:1222:3
     |
1222 |   assert!(size_of::<TypeId>() == size_of::<u64>());
     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the evaluated program panicked at 'assertion failed: size_of::<TypeId>() == size_of::<u64>()', cargo-crates/v8-0.47.1/src/isolate.rs:1222:3
     |
     = note: this error originates in the macro `assert` (in Nightly builds, run with -Z macro-backtrace for more info)

Reported by:	pkg-fallout