Phases: set the period correctly

Author: smarter

src/dotty/tools/dotc/core/Phases.scala

@@ -241,7 +241,7 @@ object Phases {
       if (start >= FirstPhaseId)
         assert(myPeriod == Periods.InvalidPeriod, s"phase $this has already been used once; cannot be reused")
       myBase = base
-      myPeriod = Period(start, end)
+      myPeriod = Period(NoRunId, start, end)
       myErasedTypes  = prev.getClass == classOf[Erasure]      || prev.erasedTypes
       myFlatClasses  = prev.getClass == classOf[Flatten]      || prev.flatClasses
       myRefChecked   = prev.getClass == classOf[RefChecks]    || prev.refChecked