JS backend: fix compiler crash on for with empty body

js/js.translator/testData/expression/for/cases/forWithEmptyBody.kt

@@ -0,0 +1,14 @@
+package foo
+
+fun box(): String {
+    for (i in 0..5);
+
+    val r = 0..5
+    for (i in r);
+
+    for (i in arrayOf(1, 2, 3));
+
+    for (i in arrayOf(1, 2, 3).asList());
+
+    return "OK"
+}

js/js.translator/testData/expression/for/cases/forWithSideEffectImElementAccessAndWithEmptyBody.kt

@@ -0,0 +1,45 @@
+package foo
+
+var log = ""
+
+class T(val id: Int) {
+    fun component1(): Int {
+        log += "($id).component1();"
+        return 1
+    }
+    fun component2(): String {
+        log += "($id).component2();"
+        return "1"
+    }
+}
+
+class C {
+    fun iterator(): Iterator<T> = object: Iterator<T> {
+        var i = 0
+        var data = arrayOf(T(3), T(1), T(2))
+        override fun hasNext(): Boolean {
+            log += "C.hasNext();"
+            return i < data.size()
+        }
+
+        override fun next(): T {
+            log += "C.next();"
+            return data[i++]
+        }
+    }
+}
+
+fun box(): String {
+    for ((a, b) in arrayOf(T(3), T(1), T(2)));
+    assertEquals("(3).component1();(3).component2();(1).component1();(1).component2();(2).component1();(2).component2();", log)
+
+
+    log = ""
+    for ((a, b) in C());
+    assertEquals("C.hasNext();C.next();(3).component1();(3).component2();C.hasNext();C.next();" +
+                 "(1).component1();(1).component2();C.hasNext();C.next();" +
+                 "(2).component1();(2).component2();C.hasNext();", log)
+
+    return "OK"
+}
+