community/libsurvive: fix lfs64 usage
Fixes error found during 3.19 rebuild: https://build.alpinelinux.org/buildlogs/build-3-19-aarch64/community/libsurvive/libsurvive-1.01-r3.log
Fixes error found during 3.19 rebuild: https://build.alpinelinux.org/buildlogs/build-3-19-aarch64/community/libsurvive/libsurvive-1.01-r3.log