I have fixed the issue
https://src.fedoraproject.org/rpms/libpst/c/b1874bd9f8ba64d3801e1097c031cd75...
and also cleaned up the spec file
https://src.fedoraproject.org/rpms/libpst/c/34fa7877c3c30b291712914b9834c791... https://src.fedoraproject.org/rpms/libpst/c/9b598b3e2231c8b6a5b747b6575c7b2e... https://src.fedoraproject.org/rpms/libpst/c/f8581b4e6c23146385a4b33aab3ac790...
and have submitted f31 & f30 builds to koji