testsuite updated to reflect recent changes in codegen: branch support

backend.native/tests/codegen/branching/when5.kt

@@ -0,0 +1,10 @@
+fun when5(i: Int): Int {
+  when (i) {
+    0 -> return 42
+    1 -> return 4
+    2 -> return 3
+    3 -> return 2
+    4 -> return 1
+    else -> return 24
+  }
+}