Thread: silence -Wsign-compare on FreeBSD aarch64

[jbeich]

Error since #7524 which predates #11315 but around #11868 built fine by accident. From error log:

Utilities/Thread.cpp:1799:48: error: comparison of integers of different signs: 'uptr' (aka 'unsigned long') and '__register_t' (aka 'long') [-Werror,-Wsign-compare]
        const bool is_executing = uptr(info->si_addr) == RIP(context);
                                  ~~~~~~~~~~~~~~~~~~~ ^  ~~~~~~~~~~~~

rpcs3/util/types.hpp
131:using uptr = std::uintptr_t;

/usr/include/machine/_types.h
75:typedef __int64_t       __register_t;
82:typedef __uint64_t      __uintptr_t;

/usr/include/machine/ucontext.h
40:     __register_t    gp_elr;

/usr/include/sys/signal.h
242:    void    *si_addr;               /* faulting instruction */

Note, ignore macOS CI:

Intel macOS instances are no longer supported!

b0ee533 built fine on macOS

[MSuih]

We are trying to fix mac builds in #13155, just ignore the failures for now