Build fails on mingw

[Kreijstal]

In file included from C:/Users/kreij/scoop/apps/msys2/2022-01-28/home/kreij/stable-diffusion.cpp/util.cpp:1:
C:/Users/kreij/scoop/apps/msys2/2022-01-28/home/kreij/stable-diffusion.cpp/util.h:20:1: error: 'int32_t' does not name a type
   20 | int32_t get_num_physical_cores();
      | ^~~~~~~
C:/Users/kreij/scoop/apps/msys2/2022-01-28/home/kreij/stable-diffusion.cpp/util.h:5:1: note: 'int32_t' is defined in header '<cstdint>'; did you forget to '#include <cstdint>'?
    4 | #include <string>
  +++ |+#include <cstdint>
    5 |
make[2]: *** [CMakeFiles/stable-diffusion.dir/build.make:104: CMakeFiles/stable-diffusion.dir/util.cpp.obj] Error 1
make[1]: *** [CMakeFiles/Makefile2:167: CMakeFiles/stable-diffusion.dir/all] Error 2
make: *** [Makefile:136: all] Error 2

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It gets fixed if you import before using int32_t