Fix error handling in analysis.getError.

pkg/analysis_server/lib/src/operation/operation_analysis.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library operation.analysis;
 
 import 'package:analysis_server/src/analysis_server.dart';
 import 'package:analysis_server/src/computer/computer_highlights.dart';
 import 'package:analysis_server/src/computer/computer_navigation.dart';
 import 'package:analysis_server/src/computer/computer_occurrences.dart';
@@ skipping 77 matching lines @@
     // performAnalysisTask that will be called when the task has been computed
     // but before it is performed and send notification in the function:
     //
     // AnalysisResult result = context.performAnalysisTask((taskDescription) {
     //   sendStatusNotification(context.toString(), taskDescription);
     // });
     // prepare results
     AnalysisResult result = context.performAnalysisTask();
     List<ChangeNotice> notices = result.changeNotices;
     if (notices == null) {
-      server.sendContextAnalysisDoneNotifications(context);
+      server.sendContextAnalysisDoneNotifications(context,
+          AnalysisDoneReason.COMPLETE);
       return;
     }
     // process results
     sendNotices(server, notices);
     updateIndex(server.index, notices);
     // continue analysis
     server.addOperation(new PerformAnalysisOperation(context, true));
   }
 
   /**
@@ skipping 48 matching lines @@
       // HTML
       {
         HtmlUnit htmlUnit = notice.htmlUnit;
         if (htmlUnit != null) {
           index.indexHtmlUnit(context, htmlUnit);
         }
       }
     }
   }
 }