32-bit self-test failures

[jas4711]

I got some self-check errors on i386:

https://salsa.debian.org/jas/globalplatform/-/jobs/9455010

7: [ RUN      ] test_parse_card_capability_vector_2_invalid
7: [  ERROR   ] --- -2144276469 != 2150690827
7: [   LINE   ] --- ./globalplatform/src/getDataTest.c:276: error: Failure!
...
4: [ RUN      ] test_validate_signature_ecc
4: [  ERROR   ] --- -2144276480 != 2150690816
4: [   LINE   ] --- ./globalplatform/src/cryptoTest.c:200: error: Failure!
4: [  FAILED  ] test_validate_signature_ecc
...
[ RUN      ] test_validate_signature_rsa
[  ERROR   ] --- -2144276480 != 2150690816
[   LINE   ] --- ./globalplatform/src/cryptoTest.c:173: error: Failure!
[  FAILED  ] test_validate_signature_rsa
...

Probably some 'int' size confusion?