CLN: Suppres compile warnings of pandas/io/sas/sas.pyx
- [x] ref #32163
- [ ] tests added / passed
- [x] passes `black pandas`
- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [ ] whatsnew entry

---

This is the warning that get removed:

```
pandas/io/sas/sas.c: In function ‘__pyx_f_6pandas_2io_3sas_4_sas_rdc_decompress’:
pandas/io/sas/sas.c:3732:65: warning: ‘__pyx_v_ctrl_bits’ may be used uninitialized in this function [-Wmaybe-uninitialized]
 3732 |     __pyx_t_8 = (((__pyx_v_ctrl_bits & __pyx_v_ctrl_mask) == 0) != 0);
      |                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
```
If you wanted to look at #32163 and have a way to get stricter on warnings without solving all at once would certainly welcome it. Achievable through various GCC flags I think @WillAyd You think it's possible to have the ```-Werror``` flag only for specific files? (to prevent regression to fixed files) i was thinking individual warnings but sure to individual files if not overly complicated. There’s only a few left outside of that PR

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> On Mar 7, 2020, at 12:11 PM, MomIsBestFriend <notifications@github.com> wrote:
> 
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> @WillAyd You think it's possible to have the -Werror flag only for specific files? (to prevent regression to fixed files)
> 
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 Thanks @MomIsBestFriend 