squash some warnings

2016-01-17 16:37:45 +01:00 · 2016-01-17 16:37:45 +01:00 · e5baba2b29
commit e5baba2b29
parent 3140e72265
42 changed files with 146 additions and 161 deletions
--- a/akka-stream/src/main/scala/akka/stream/impl/fusing/Fusing.scala
+++ b/akka-stream/src/main/scala/akka/stream/impl/fusing/Fusing.scala
@ -504,6 +504,7 @@ private[stream] object Fusing {
    private def removeMapping[T](orig: T, map: ju.Map[T, List[T]]): T =
      map.remove(orig) match {
        case null     ⇒ null.asInstanceOf[T]
+        case Nil      ⇒ throw new IllegalStateException("mappings corrupted")
        case x :: Nil ⇒ x
        case x :: xs ⇒
          map.put(orig, xs)