Some ffi tests depend on the pointer size. Added a variant for 32bit
architectures.
The conditional build for 32bit architectures is intentionally done on
not(target_pointer_width = "64") so the test is not silently skipped
on architectures with other pointer sizes. In case somebody really wants
to use zmq-sys on 16 bit architectures, the test will fail and another
variant for that pointer size would have to be added.
Some ffi tests depend on the pointer size. Added a variant for 32bit architectures.
The conditional build for 32bit architectures is intentionally done on
not(target_pointer_width = "64")so the test is not silently skipped on architectures with other pointer sizes. In case somebody really wants to use zmq-sys on 16 bit architectures, the test will fail and another variant for that pointer size would have to be added.