Debugger: Fix unused warning in procinterrupt

Change-Id: I9173f4040783460ba3b520b1a39a461de8283f21
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Editors: Provide a base implementation for {save,restore}State

Change-Id: Iedfc0d59ecfe257ad5823cff39977bce82ada3a5
Reviewed-by: Eike Ziller <eike.ziller@digia.com>