Failure in FITSPulsarIO on macOS

We have new macOS runner hardware and I'm trying to get macOS nightly builds running again, and with the default options I'm getting the following build failure:

  CC       FITSPulsarIO.lo
In file included from FITSFileIO.c:32:
/opt/local/include/fitsio.h:2006:30: error: this function declaration is not a
      prototype [-Werror,-Wstrict-prototypes]
int CFITS_API fits_init_https();
                             ^
                              void
/opt/local/include/fitsio.h:2007:33: error: this function declaration is not a
      prototype [-Werror,-Wstrict-prototypes]
int CFITS_API fits_cleanup_https();
                                ^
                                 void
2 errors generated.

This is with:

$ port installed cfitsio
The following ports are currently installed:
  cfitsio @3.440_0 (active)
$

Any ideas?