[Asterisk-code-review] various files - fix some alerts raised by lgtm code analysis (asterisk[16])

[George Joseph]

George Joseph has removed a vote from this change. ( https://gerrit.asterisk.org/c/asterisk/+/13100 )


Change subject: various files - fix some alerts raised by lgtm code analysis
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Gerrit-Project: asterisk
Gerrit-Branch: 16
Gerrit-Change-Id: Id4a881686605d26c94ab5409bc70fcc21efacc25
Gerrit-Change-Number: 13100
Gerrit-PatchSet: 5
Gerrit-Owner: Kevin Harwell <kharwell at digium.com>
Gerrit-Reviewer: Friendly Automation
Gerrit-Reviewer: George Joseph <gjoseph at digium.com>
Gerrit-Reviewer: Joshua Colp <jcolp at digium.com>
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