Fix bug with matchLastLine option discussed in PR
Fix bug with matchLastLine option discussed in PR

See discussion on PR: https://github.com/gliderlabs/logspout/pull/370/files/1cbef7d325a6e43fad6489bbf161a25ee062246b
gliderlabs/logspout,gliderlabs/logspout,lytics/logspout,lytics/logspout