Macro winwrap::make_func_hresult

macro_rules! make_func_hresult {
    ($($pa:ident)::*, pub $(unsafe)? fn $func:ident($($p:ident: $t:ty,)*) -> $ret:ty;) => { ... };
    ($($pa:ident)::*, pub safe fn $func:ident($($p:ident: $t:ty,)*) -> $ret:ty;) => { ... };
}