Bugfix #2102 main_v10.0 initialize modified_hdr_typ

[hsoh-u]

Expected Differences

• Do these changes introduce new tools, command line arguments, or configuration file options? [No]
  
  If yes, please describe:
  

• Do these changes modify the structure of existing or add new output data types (e.g. statistic line types or NetCDF variables)? [No]
  
  If yes, please describe:
  

Pull Request Testing

• Describe testing already performed for these changes:
  

/d1/personal/hsoh/git/bugfixes/bugfix_2102_main_ioda2nc_header_type/MET/met/bin/ioda2nc /d1/projects/MET/MET_test_data/unit_test/obs_data/ioda/odb_sonde_16019.nc4 odb_sonde_16019_all.nc -v 3

ncdump -v hdr_typ_table odb_sonde_16019_all.nc | tail

The output should be

data:

 hdr_typ_table =
  "" ;
}

• Recommend testing for the reviewer(s) to perform, including the location of input datasets, and any additional instructions:
  

Check the output of ioda2nc/odb_sonde_16019_all.nc

• Do these changes include sufficient documentation updates, ensuring that no errors or warnings exist in the build of the documentation? [No]

• Do these changes include sufficient testing updates? [No]

• Will this PR result in changes to the test suite? [No]
  
  If yes, describe the new output and/or changes to the existing output:
  

The garbage at the hdr_typ_table should be removed

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[JohnHalleyGotway]

I approve of this fix. Recommend removing the dummy_for_action file. And we do need a 3rd PR to fix this bug in main_v10.1 as well. I checked and see that modified_hdr_typ remains uninitialized there as well.