translator: additional elvist test

translator/src/test/kotlin/tests/input/elvis_1.txt

@@ -1,2 +1,3 @@
 elvis_test_1_Int(0) == 0
 elvis_test_1_Int(2) == 1
+elvis_test_2() == 1

translator/src/test/kotlin/tests/kotlin/elvis_1.kt

@@ -13,4 +13,8 @@ fun elvis_test_1(x: Int): Int {
     return 1
 }
 
-
+fun elvis_test_2(): Int {
+    val i: elvis_1_MyClass? = null
+    i ?: return 1
+    return 0
+}