tests: Update external tests (1.1.2-dev-393)

backend.native/tests/external/codegen/box/when/noElseInStatement.kt

@@ -0,0 +1,7 @@
+fun box(): String {
+    val x = 1
+    when (x) {
+        1 -> return "OK"
+    }
+    return "Fail 1"
+}