Adopt more tests for functions from codegen tests.

Create test for KT-2565.

js/js.translator/testFiles/expression/misc/cases/localVarAsFunction.kt

@@ -0,0 +1,17 @@
+package foo
+
+var c = 2
+
+fun loop(var times : Int) {
+   while(times > 0) {
+        val u : (value : Int) -> Unit = {
+            c++
+        }
+        u(times--)
+   }
+}
+
+fun box() : Any? {
+    loop(5)
+    return if (c == 7) return "OK" else c
+}