Intention to simplify for using destructing declaration

idea/testData/intentions/iterationOverMap/DataClass.kt

@@ -0,0 +1,12 @@
+// WITH_RUNTIME
+
+fun main(args: Array<String>) {
+    val list = listOf(MyClass(1, 2, 3), MyClass(2, 3, 4))
+    for (<caret>klass in list) {
+        val a = klass.a
+        val b = klass.b
+        val c = klass.c
+    }
+}
+
+data class MyClass(val a: Int, val b: Int, val c: Int)