work in the WASM compilation

[ismaelfaro]

In this moment when I try to cross compile this version to WASM I got error related with some issues in the support of the Math lib

rand/wyrand/z_wyrand.c.v:5:28: error: duplicate method `free`
    3 | // free should be called when the generator is no longer needed
    4 | @[unsafe]
    5 | pub fn (mut rng WyRandRNG) free() {
      |                            ~~~~
    6 |     unsafe { free(rng) }
    7 | }

And others

math/bits.js.v:6:1: error: expected `#define`, `#flag`, `#include`, `#insert` or `#pkgconfig` not res.val = Infinity
    4 |     mut res := 0.0
    5 |     if sign >= 0 {
    6 |         #res.val = Infinity
      | ~~~~~~~~~~~~~~~~~~~~