Regression: lambdas capture `this` when they should not

[DarkDimius]

  class LeakMe {
    def bar(a: Int => Int) = a(2)

    val s = 1
    def noCapture =       bar{x => println(x); x}
    def yesCapture =     bar{x => println(x + s); x}
  }

In this class, the lambda inside noCapture does not need the LeakMe instance and can be made a static method. It is made into a private method instead, implicitly capturing LeakMe.this

Unlike this, in scalac-2.11 the anonymous class created for noCapture does not capture LeakMe.

[DarkDimius]

code generated by dotc:

   public int noCapture() {
        return this.bar((Function1)((JFunction1.mcII.sp)this::$anonfun$noCapture$1));
    }
    private int $anonfun$noCapture$1(int x) {
        Predef..MODULE$.println((Object)BoxesRunTime.boxToInteger((int)x));
        return x;
    }

code generated by scalac:

public int noCapture() {
        return this.bar((Function1<Object, Object>)new scala.Serializable(this){
            public static final long serialVersionUID = 0;

            public final int apply(int x) {
                return this.apply$mcII$sp(x);
            }

            public int apply$mcII$sp(int x) {
                scala.Predef$.MODULE$.println((Object)scala.runtime.BoxesRunTime.boxToInteger((int)x));
                return x;
            }

            public final /* bridge */ /* synthetic */ Object apply(Object v1) {
                return scala.runtime.BoxesRunTime.boxToInteger((int)this.apply(scala.runtime.BoxesRunTime.unboxToInt((Object)v1)));
            }
        });
    }