Fix for NPE in the field creation Quick Fix.

pkg/analysis_server/test/services/correction/fix_test.dart

Index: pkg/analysis_server/test/services/correction/fix_test.dart
diff --git a/pkg/analysis_server/test/services/correction/fix_test.dart b/pkg/analysis_server/test/services/correction/fix_test.dart
index 7406f2f50d553b22ad472e527ec1f52275ed7d3f..6625ff2244dcf83c26f204c7b29f19cbb5f50dce 100644
--- a/pkg/analysis_server/test/services/correction/fix_test.dart
+++ b/pkg/analysis_server/test/services/correction/fix_test.dart
@@ -600,6 +600,18 @@ class B extends A {
     assertNoFix(FixKind.CREATE_CONSTRUCTOR_SUPER);
   }
 
+  void test_createField_BAD_inEnum() {
+    resolveTestUnit('''
+enum MyEnum {
+  AAA, BBB
+}
+main() {
+  MyEnum.foo;
+}
+''');
+    assertNoFix(FixKind.CREATE_FIELD);
+  }
+
   void test_createField_BAD_inSDK() {
     resolveTestUnit('''
 main(List p) {