Fix a couple of warnings.

Author: nicolasstucki

src/dotty/tools/dotc/transform/InterceptedMethods.scala

@@ -22,7 +22,6 @@ import dotty.tools.dotc.ast.{untpd, tpd}
 import dotty.tools.dotc.core.Constants.Constant
 import dotty.tools.dotc.core.Types.MethodType
 import dotty.tools.dotc.core.Names.Name
-import dotty.runtime.LazyVals
 import scala.collection.mutable.ListBuffer
 import dotty.tools.dotc.core.Denotations.SingleDenotation
 import dotty.tools.dotc.core.SymDenotations.SymDenotation

src/dotty/tools/dotc/transform/TailRec.scala

@@ -338,14 +338,16 @@ class TailRec extends MiniPhaseTransform with DenotTransformer with FullParamete
           assert(false, "We should never have gotten inside a pattern")
           tree
 
+        case t @ DefDef(_, _, _, _, _) =>
+          t // todo: could improve to handle DefDef's with a label flag calls to which are in tail position
+
         case ValDef(_, _, _) | EmptyTree | Super(_, _) | This(_) |
-             Literal(_) | TypeTree(_) | DefDef(_, _, _, _, _) | TypeDef(_, _) =>
+             Literal(_) | TypeTree(_) | TypeDef(_, _) =>
           tree
 
         case Return(expr, from) =>
           tpd.cpy.Return(tree)(noTailTransform(expr), from)
-        case t: DefDef =>
-          t // todo: could improve to handle DefDef's with a label flag calls to which are in tail position
+
         case _ =>
           super.transform(tree)
       }

test/dotc/build.scala

@@ -26,6 +26,5 @@ object build extends tests {
     dotty // build output dir
     val p = Runtime.getRuntime.exec(Array("jar", "cf", "dotty.jar", "-C", "out", "."))
     p.waitFor()
-    p
   }
 }