[Cython] [Bug] Don't compile lambda with tuple argument.

[yi huang]

Even function with tuple match parameter don't work either.

```
def test((name, v)):
    return True
```

```
Error compiling Cython file:
------------------------------------------------------------
...
def test((name, v)):
                 ^
------------------------------------------------------------

/private/tmp/test.pyx:3:18: Empty declarator
```

On Tue, Nov 10, 2015 at 8:01 AM, yi huang <yi.codeplayer at gmail.com> wrote:
> λ $ cat /tmp/test.pyx
> f = lambda (name,v):True
>
> λ $ cython /tmp/test.pyx
>
> Error compiling Cython file:
> ------------------------------------------------------------
> ...
> f = lambda (name,v):True
>                   ^
> ------------------------------------------------------------
>
> /tmp/test.pyx:1:19: Empty declarator
>
>
> Tested with both 0.21 and 0.23



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