Adjust number of bytecode insn for Lazy Vals test & extend test

Author: szymon-rd

Diff for: compiler/test/dotty/tools/backend/jvm/DottyBytecodeTests.scala

@@ -597,7 +597,7 @@ class DottyBytecodeTests extends DottyBytecodeTest {
       val clsIn   = dir.lookupName("Test.class", directory = false).input
       val clsNode = loadClassNode(clsIn)
       val method  = getMethod(clsNode, "test")
-      assertEquals(122, instructionsFromMethod(method).size)
+      assertEquals(123, instructionsFromMethod(method).size)
     }
   }
 

Diff for: tests/run/serialization-new.check

@@ -228,7 +228,10 @@ Calculating a1
 1
 Calculating a2
 2
+Calculating a3
+3
 Calculating a1
 1
 Calculating a2
 2
+3

Diff for: tests/run/serialization-new.scala

@@ -476,12 +476,18 @@ class WithTransient extends Serializable {
     println("Calculating a2")
     2
   }
+  private lazy val a3 = {
+    println("Calculating a3")
+    3
+  }
+
   @transient object B extends Serializable
   @transient private object C extends Serializable
 
   def test = {
     println(a1)
     println(a2)
+    println(a3)
     if (B == null || C == null)
      println("Transient nested object failed to serialize properly")
   }