Fixed a memory leak in the coordinateset test
Fixed a memory leak in the coordinateset test

When an ArraySet pointer is used to delete a more derived object
m_content was not getting deleted.

Change-Id: Ia8a4f42250d5747bde4d3c4d821a65926e81fc52

OpenChemistry/avogadrolibs,ghutchis/avogadrolibs,wadejong/avogadrolibs,ghutchis/avogadrolibs,OpenChemistry/avogadrolibs,OpenChemistry/avogadrolibs,cjh1/mongochemweb-avogadrolibs,ghutchis/avogadrolibs,ghutchis/avogadrolibs,cjh1/mongochemweb-avogadrolibs,ghutchis/avogadrolibs,OpenChemistry/avogadrolibs,wadejong/avogadrolibs,wadejong/avogadrolibs,wadejong/avogadrolibs,cjh1/mongochemweb-avogadrolibs,OpenChemistry/avogadrolibs,cjh1/mongochemweb-avogadrolibs