mythdate.cpp requires include <array> on macOS SDK 12.3 and later (C++17)

[jhoyt4]

• Platform: macOS

• MythTV version: fixes/32 and master

• Package version: N/A

• Component: mythdate.cpp

What steps will reproduce the bug?

How often does it reproduce? Is there a required condition?

everytime

What is the expected behaviour?

successful compile

What do you see instead?

Here's the compiler error from fixes/32

mythdate.cpp:266:44: error: constexpr variable cannot have non-literal type 'const std::array<int, 4>'
        static constexpr std::array<int,4> divisor = {1000, 100, 10, 1};
                                           ^
mythdate.cpp:266:44: error: implicit instantiation of undefined template 'std::array<int, 4>'
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX12.3.sdk/usr/include/c++/v1/__tuple:219:64: note: template is declared here
template <class _Tp, size_t _Size> struct _LIBCPP_TEMPLATE_VIS array;
                                                               ^
2 errors generated.
make[2]: *** [obj/mythdate.o] Error 1
make[1]: *** [sub-libmythbase-make_first] Error 2
make: *** [libs] Error 2
    Compiling Mythtv failed

Additional information

adding include <array> to the beginning of mythdate.cpp the file seems to have resolved the issue

I'm working up a PR for both once I get the chance to finish compiling and test

[jhoyt4]

Fixed by PR536 and PR537