Fix listScalars to correct loop variable
Fix listScalars to correct loop variable

GetNumberOfComponents(...) should not be used when iterating over
point data. In this case we really want GetNumberOfArrays(...).

Signed-off-by: Chris Harris <a361e89d1eba6c570561222d75facbbf7aaeeafe@kitware.com>

OpenChemistry/tomviz,OpenChemistry/tomviz,OpenChemistry/tomviz,OpenChemistry/tomviz