Fix various clang-tidy warnings

Authored by dvratil on Jul 14 2018, 3:56 PM.

Description

Fix various clang-tidy warnings

Removed Q_REQUIRED_RESULT from some functions where the return value
optionally indicates success or its use is not mandated to be used.

Details

Committed
dvratilJul 14 2018, 5:30 PM
Parents
R165:cfefd79e17fc: Merge branch 'Applications/18.04'
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