Surround with null check : apply for ITERATOR_ON_NULLABLE

idea/testData/quickfix/expressions/fixNullableWithExclExclAbsentWithBadIterator.kt

@@ -1,5 +1,6 @@
 // "Add non-null asserted (!!) call" "false"
 // ACTION: Replace with a 'forEach' function call
+// ACTION: Surround with null check
 // ERROR: Not nullable value required to call an 'iterator()' method on for-loop range
 
 class Some {

idea/testData/quickfix/surroundWithNullCheck/iteratorUnsafe.kt

@@ -0,0 +1,6 @@
+// "Surround with null check" "true"
+// WITH_RUNTIME
+
+fun foo(list: List<String>?) {
+    for (element in <caret>list) {}
+}

idea/testData/quickfix/surroundWithNullCheck/iteratorUnsafe.kt.after

@@ -0,0 +1,8 @@
+// "Surround with null check" "true"
+// WITH_RUNTIME
+
+fun foo(list: List<String>?) {
+    if (list != null) {
+        for (element in list) {}
+    }
+}