integer precision warnings

[incanus]

Xcode generates a lot of integer precision warnings related (mostly) to size_t return types vs. int32_t assignments:

Should we be worried about this? What's the rationale for use of int32_t and how does it impact other platforms?

[springmeyer]

definitely worth fixing but not likely anything to worry about.

[incanus]

Yeah, clearly works but I'm in with the Objective-C community habit of getting rid of all warnings on build with Xcode.

Low priority.

[kkaefer]

I think I fixed those errors in our code. There are still a few in libtess2, but I'm not going to modify that code.