Multiple tuple structs naming inconsistency.

[cmester0]

The following code, results in incorrect names, as the _1 incrementation is not added to the concrete ident used in the constructor of tuple struct.

fn main(){
    {
        struct Cookie;
        let c = [Cookie, Cookie {}, Cookie, Cookie {}];
    }
    {
        struct Cookie {}
        const Cookie: Cookie = Cookie {};
        let c = [Cookie, Cookie {}, Cookie, Cookie {}];
    }
}

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[W95Psp]

This is fixed by #1199.