Updating documentation to use isEmpty check. (flutter#2955)

The value returned is never null. This is already done correclty in the
example app.

Co-authored-by: Dan Field <dnfield@google.com>

Author: 2 people

packages/image_picker/image_picker/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.6.7+7
+
+* Updating documentation to use isEmpty check.
+
 ## 0.6.7+6
 
 * Update package:e2e -> package:integration_test

packages/image_picker/image_picker/README.md

@@ -77,7 +77,7 @@ Android system -- although very rarely -- sometimes kills the MainActivity after
 Future<void> retrieveLostData() async {
   final LostData response =
       await picker.getLostData();
-  if (response == null) {
+  if (response.isEmpty) {
     return;
   }
   if (response.file != null) {

packages/image_picker/image_picker/pubspec.yaml

@@ -2,7 +2,7 @@ name: image_picker
 description: Flutter plugin for selecting images from the Android and iOS image
   library, and taking new pictures with the camera.
 homepage: https://github.com/flutter/plugins/tree/master/packages/image_picker/image_picker
-version: 0.6.7+6
+version: 0.6.7+7
 
 flutter:
   plugin: