Variables with all missing values are reported as a mismatch

glance, version 0.3.2

Observed the problem when generating reports comparing two NetCDF files that contained several variables with all-missing data in both files. The report showed these variables as a mismatch.

Reduced the problem to a simple case, comparing an all-missing variable to itself.

glance reportGen --nolonlat /apollo/ait/glance_test_cases/20170307_seiss/OR_SEIS-L1b-EHIS_G16_s20170511738060_e20170511738060_c20170511743066.nc /apollo/ait/glance_test_cases/20170307_seiss/OR_SEIS-L1b-EHIS_G16_s20170511738060_e20170511738060_c20170511743066.nc CNO5MinuteDifferentialFluxes

The test data is on the apollo lustre drive: /apollo/ait/glance_test_cases/20170307_seiss