Catch missing schedstat file (#1641)
Catch missing schedstat file (#1641)

Suppres error log noise if schedstat file doesn't exist.

Signed-off-by: Ben Kochie <9bbf917dc63fbaa40c67921332d26cf16a50db75@gmail.com>
prometheus/node_exporter,siavashs/node_exporter,prometheus/node_exporter,siavashs/node_exporter,siavashs/node_exporter,prometheus/node_exporter,siavashs/node_exporter