golang: Fix unit test failures on 32-bit systems
golang: Fix unit test failures on 32-bit systems

Add the setreuid32 syscall to the test filter as well as setreuid.
On most 64-bit systems the syscall does not exist, but this should
be handled by libseccomp, and actually slightly increases test
coverage.

Signed-off-by: Matthew Heon <8dfcee637b682eb0c94f501440904ab12404ca8d@gmail.com>

mheon/libseccomp-golang,seccomp/libseccomp-golang