Return EPKG_FATAL if conversion to int64_t has failed
Return EPKG_FATAL if conversion to int64_t has failed

Reported by:	rg1

khorben/pkg,khorben/pkg,junovitch/pkg,skoef/pkg,skoef/pkg,en90/pkg,en90/pkg,Open343/pkg,Open343/pkg,junovitch/pkg,khorben/pkg