NullPointerException generated when uncompressing a specific sp3 file
When parsing the file
ftp://igs.ign.fr/pub/igs/products/mgex/1843/gbm18432.sp3.Z
from IGS MGEX project, a NullPointerException is generated after having
successfully
uncompressed 80% of the file.
(from redmine: issue id 450, created on 2018-05-16, closed on 2018-06-04)