Initialize ctemp to prevent uninitialized value error

[MichaelChirico]

Our compiler flagged this.

Actually, ctemp looks unused, so I'm wondering if it's needed at all.

[therneau]

You are right. I've now removed it in my source. The comment further up "G will be incorrect here, so don't compute it" is key, it's why I don't need to count censoring events.