TastyPrinter: fix LambdaType printing

Author: smarter

src/dotty/tools/dotc/core/tasty/TastyFormat.scala

@@ -478,6 +478,7 @@ object TastyFormat {
     case ORtype => "ORtype"
     case BYNAMEtype => "BYNAMEtype"
     case POLYtype => "POLYtype"
+    case LAMBDAtype => "LAMBDAtype"
     case METHODtype => "METHODtype"
     case PARAMtype => "PARAMtype"
     case ANNOTATION => "ANNOTATION"

src/dotty/tools/dotc/core/tasty/TastyPrinter.scala

@@ -72,7 +72,7 @@ class TastyPrinter(bytes: Array[Byte])(implicit ctx: Context) {
               printName(); printTree(); printTrees()
             case RETURN =>
               printNat(); printTrees()
-            case METHODtype | POLYtype =>
+            case METHODtype | LAMBDAtype | POLYtype =>
               printTree()
               until(end) { printName(); printTree() }
             case PARAMtype =>