Fix staticcheck ST1003 warnings (#1249)
Fix staticcheck ST1003 warnings (#1249)

This fixes a few staticcheck ST1003 warnings in OpenBSD CPU
collector. No functional change.

Signed-off-by: Ralf Horstmann <e7ddd296785cc89849cac257bac78993d371327a@ackstorm.de>
derekmarcotte/node_exporter,siavashs/node_exporter,derekmarcotte/node_exporter,derekmarcotte/node_exporter,prometheus/node_exporter,siavashs/node_exporter,prometheus/node_exporter,siavashs/node_exporter,prometheus/node_exporter,siavashs/node_exporter,derekmarcotte/node_exporter