Add run and pos test for #1503

Author: felixmulder

tests/pos/i1503.scala

@@ -0,0 +1,6 @@
+object Test {
+  (
+new Function0[Unit] {
+    def apply() = println("hello")
+  })()
+}

tests/run/i1503.check

@@ -0,0 +1 @@
+working

tests/run/i1503.scala

@@ -0,0 +1,7 @@
+object Test {
+  def main(args: Array[String]): Unit = {
+    (new Function0[Unit] {
+      def apply() = println("working")
+    })()
+  }
+}