No longer explictly close errorChan in LogReader.TailLogs.
No longer explictly close errorChan in LogReader.TailLogs.

    + When noaa consumer goes into retry logic block, it closes the errorChan
      and ltc panics since the errorChan is already closed.

[#87056544]

Signed-off-by: David Wadden <ff4ebafbe4a7d77cde45f9afefafd7a5dfa94f36@pivotal.io>

felipeg48/lattice,SrinivasChilveri/lattice,Klaudit/lattice,mikegehard/lattice,felipeg48/lattice,Klaudit/lattice,davidwadden/lattice,datachand/lattice,davidwadden/lattice-release,mikegehard/lattice,datachand/lattice,davidwadden/lattice-release,svrc-pivotal/lattice,davidwadden/lattice,Klaudit/lattice,datachand/lattice,SrinivasChilveri/lattice,svrc-pivotal/lattice,SrinivasChilveri/lattice,svrc-pivotal/lattice,SrinivasChilveri/lattice,cloudfoundry-incubator/ltc,Klaudit/lattice,datachand/lattice,cloudfoundry-incubator/ltc,svrc-pivotal/lattice