Correct argument of numDigits()
Correct argument of numDigits()

This way the variables have the expected name big_var_01 (instead of big_var_1) with default settings, esp. nVars=10.

tbeu/netCDF-DataReader,tbeu/netCDF-DataReader,tbeu/netCDF-DataReader,tbeu/netCDF-DataReader,modelica-3rdparty/netCDF-DataReader,modelica-3rdparty/netCDF-DataReader,modelica-3rdparty/netCDF-DataReader,modelica-3rdparty/netCDF-DataReader