fix nondeterminism in printerstest???

Author: adriaanm

test/junit/scala/reflect/internal/PrintersTest.scala

@@ -892,7 +892,7 @@ trait TraitPrintTests {
     |  type Foo;
     |  type XString = scala.Predef.String
     |} with scala.Serializable {
-    |  val z = 7
+    |  val z: Int = 7
     |}""")
 
   @Test def testTraitWithSingletonTypeTree = assertPrintedCode(sm"""
@@ -1012,7 +1012,7 @@ trait ValAndDefPrintTests {
 
   @Test def testDefWithLazyVal2 = assertPrintedCode(sm"""
     |def a = {
-    |  lazy val test: Unit = {
+    |  lazy val test: scala.Unit = {
     |    scala.Predef.println();
     |    scala.Predef.println()
     |  };