Safe error cause mapping 2

src/main/scala/gwen/core/status/Failed.scala

@@ -33,7 +33,7 @@ case class Failed(nanos: Long, error: Throwable) extends EvalStatus {
   override def exitCode = 1
   override def icon = Some("✘")
   override def emoticon = "[:(]"
-  override def cause = Option(error).map(_.getCause)
+  override def cause = Option(error).map(e => Option(e.getCause).getOrElse(error))
   override def message: String = {
     cause.map(getErrorMessage).orElse(Option(getErrorMessage(error))).getOrElse(error.getClass.getSimpleName)
   }

src/main/scala/gwen/core/status/Sustained.scala

@@ -26,6 +26,6 @@ case class Sustained(nanos: Long, error: Throwable) extends EvalStatus {
   override val keyword: StatusKeyword = StatusKeyword.Sustained
   override def exitCode = 0
   override def emoticon = "[:|]"
-  override def cause = Option(error).map(_.getCause)
+  override def cause = Option(error).map(e => Option(e.getCause).getOrElse(error))
   override def message: String = cause.map(_.getMessage).getOrElse(error.getMessage)
 }