app/layers: consolidate signed/unsigned usage
authorMarcus Fritzsch <marcus_fritzsch@mentor.com>
Tue, 12 Sep 2017 09:29:29 +0000 (11:29 +0200)
committerMarcus Fritzsch <marcus_fritzsch@mentor.com>
Tue, 12 Sep 2017 09:29:29 +0000 (11:29 +0200)
* Also make use of optional's operator* where appropriate.

Signed-off-by: Marcus Fritzsch <marcus_fritzsch@mentor.com>

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