[process-stats-dir] Fix row indexing
[process-stats-dir] Fix row indexing

Apparently `namedtuple` can't be used with `vars`
anymore.

apple/swift,benlangmuir/swift,roambotics/swift,roambotics/swift,glessard/swift,benlangmuir/swift,apple/swift,JGiola/swift,JGiola/swift,apple/swift,JGiola/swift,apple/swift,apple/swift,JGiola/swift,roambotics/swift,roambotics/swift,benlangmuir/swift,benlangmuir/swift,JGiola/swift,apple/swift,glessard/swift,JGiola/swift,benlangmuir/swift,glessard/swift,glessard/swift,glessard/swift,roambotics/swift,glessard/swift,benlangmuir/swift,roambotics/swift