Update ClamAV from 0.98.5 to 0.99.2

[donald]

freshclam (from cron) started to fail:

ClamAV update process started at Thu Jun 15 08:22:01 2017
 WARNING: Your ClamAV installation is OUTDATED!
 WARNING: Local version: 0.98.5 Recommended version: 0.99.2
 DON'T PANIC! Read http://www.clamav.net/support/faq
 main.cld is up to date (version: 58, sigs: 4566249, f-level: 60, builder: sigmgr)
 Downloading daily-23474.cdiff [100%]Downloading daily-23474.cdiff [100%]
 Downloading daily-23475.cdiff [100%]Downloading daily-23475.cdiff [100%]
 ERROR: During database load : WARNING: [LibClamAV] cli_ac_addsig: Signature for Win.Worm.Fadok-6328944-0 is too short [...] ERROR: Failed to load new database: Malformed database
 WARNING: Database load exited with status 55
 ERROR: Failed to load new database

New version is happy:

 buczek@theinternet:~/git/bee-files (update-clamav)$ sudo /usr/bin/freshclam
 ClamAV update process started at Thu Jun 15 09:19:30 2017
 main.cld is up to date (version: 58, sigs: 4566249, f-level: 60, builder: sigmgr)
 WARNING: getfile: daily-23474.cdiff not found on db.de.clamav.net (IP: 62.201.161.84)
 WARNING: getpatch: Can't download daily-23474.cdiff from db.de.clamav.net
 Downloading daily-23474.cdiff [100%]
 Downloading daily-23475.cdiff [100%]
 daily.cld updated (version: 23475, sigs: 1736834, f-level: 63, builder: neo)
 bytecode.cld is up to date (version: 303, sigs: 59, f-level: 63, builder: anvilleg)
 Database updated (6303142 signatures) from db.de.clamav.net (IP: 62.245.181.53)
 buczek@theinternet:~/git/bee-files (update-clamav)$ sudo /usr/bin/freshclam
ClamAV update process started at Thu Jun 15 09:19:38 2017
 main.cld is up to date (version: 58, sigs: 4566249, f-level: 60, builder: sigmgr)
 daily.cld is up to date (version: 23475, sigs: 1736834, f-level: 63, builder: neo)
 bytecode.cld is up to date (version: 303, sigs: 59, f-level: 63, builder: anvilleg)