fixed incorrect constructor method reference

testData/results/TestConstructorReference.dec

@@ -0,0 +1,16 @@
+public class TestConstructorReference {
+   void boo() {
+      Runnable aNew = TestConstructorReference::new;// 22
+   }// 23
+}
+
+class 'TestConstructorReference' {
+   method 'boo ()V' {
+      5      2
+      6      3
+   }
+}
+
+Lines mapping:
+22 <-> 3
+23 <-> 4