Support hunk headers with no line counts
Support hunk headers with no line counts

As Wikipedia states, "In many versions of GNU diff, each range can omit
the comma and trailing value s, in which case s defaults to 1".
Change regex to make line count optional (we don't use it anyway).

yeriomin/gitlist,thedancomplex/gitlist,jannae/gitlist,garygreen/gitlist,fredericksilva/gitlist,yeriomin/gitlist,hubdotcom/gitlist,klaussilveira/gitlist,gencer/gitlist,Rheinschafe/gitlist,mhthies/gitlist,Halasson-simatupang/gitlist,jadwigo/gitlist,hubdotcom/gitlist,thedancomplex/gitlist,jannae/gitlist,gencer/gitlist,fredericksilva/gitlist,klaussilveira/gitlist,Halasson-simatupang/gitlist,yeriomin/gitlist,tassoevan/gitlist,DannyvdSluijs/gitlist,jadwigo/gitlist,tassoevan/gitlist,NeilBryant/gitlist,Rheinschafe/gitlist,NeilBryant/gitlist,tassoevan/gitlist,DannyvdSluijs/gitlist,garygreen/gitlist,jadwigo/gitlist,jannae/gitlist,hubdotcom/gitlist,NeilBryant/gitlist,mhthies/gitlist,mhthies/gitlist,thedancomplex/gitlist,fredericksilva/gitlist,garygreen/gitlist,Halasson-simatupang/gitlist,Rheinschafe/gitlist,DannyvdSluijs/gitlist,gencer/gitlist