[ET Trac] [Einstein Toolkit] #2167: clean up CT_MultiLevel to avoid warnings and fix a small memory leak

[Einstein Toolkit]

#2167: clean up CT_MultiLevel to avoid warnings and fix a small memory leak
---------------------------------+---------------------------
 Reporter:  anonymous            |       Type:  defect
   Status:  new                  |   Priority:  minor
Milestone:                       |  Component:  Other
  Version:  development version  |   Keywords:  CT_MultiLevel
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 Pull request is here:

 https://bitbucket.org/eloisa/ctthorns/pull-requests/1/clean-up-
 ct_multilevel-to-avoid-warnings/diff

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/2167>
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