version_compare() fix for invalid version string
version_compare() fix for invalid version string

- ".0.0" caused IndexOutOfRangeException

iolevel/peachpie,iolevel/peachpie,peachpiecompiler/peachpie,iolevel/peachpie-concept,iolevel/peachpie-concept,iolevel/peachpie,peachpiecompiler/peachpie,iolevel/peachpie-concept,peachpiecompiler/peachpie