Function wasi_common_lucet::__wasi_environ_sizes_get

#[no_mangle]
pub unsafe extern "C" fn __wasi_environ_sizes_get(
    vmctx_raw: *mut lucet_vmctx, 
    environ_count_ptr: uintptr_t, 
    environ_size_ptr: uintptr_t
) -> __wasi_errno_t