Inconsistent results for glibc

[DerDakon]

A few weeks before, execution of "cvechecker -r" gave some entries for glibc, which were from 2016. After updating cvechecker and the database this week and executing "cvechecker -r" again for the same watchlist, the new entries for 2016 were missing.

Code was on master with #28 applied. The missing entries are in the nvd files, but not in the data the cvechecker gets from the database in its query in the function find_cve_for_cpe().

A minimal watchlist would be:

cpe:/a:gnu:glibc:2.22:::