Fix some issues reported by lintian

Fix some issues reported by lintian

• Trim trailing whitespace. (trailing-whitespace)

• Update standards version to 4.5.1, no changes needed. (out-of-date-standards-version)

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Build and test logs for this branch can be found at https://janitor.debian.net/lintian-fixes/pkg/isatapd/a955a8ea-7182-42f6-8029-71512e28246e.

Debdiff

These changes affect the binary packages:

[The following lists of changes regard files as different if they have different names, permissions or owners.]

Files in second set of .debs but not in first

-rw-r--r--  root/root   /usr/lib/debug/.build-id/e5/63aae30f01c7e56a684710ed4f6894bf0bd148.debug
-rw-r--r--  root/root   /usr/lib/systemd/system/isatapd.service

Files in first set of .debs but not in second

-rw-r--r--  root/root   /lib/systemd/system/isatapd.service
-rw-r--r--  root/root   /usr/lib/debug/.build-id/21/a9e4d433d820e945655a25b3fe1343a849bfab.debug

No differences were encountered between the control files of package **isatapd**

Control files of package isatapd-dbgsym: lines which differ (wdiff format)

• Build-Ids: 21a9e4d433d820e945655a25b3fe1343a849bfab e563aae30f01c7e56a684710ed4f6894bf0bd148

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