fix analysis messages

test/codegen_test.dart

 // Copyright (c) 2015, 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.
 
 /// Tests code generation.
 /// Runs Dart Dev Compiler on all input in the `codegen` directory and checks
 /// that the output is what we expected.
 library ddc.test.codegen_test;
 
 import 'dart:io';
@@ skipping 106 matching lines @@
           outputDir: actualDir,
           checkSdk: true,
           forceCompile: true,
           outputDart: dartGen,
           formatOutput: dartGen,
           cheapTestFormat: true);
       var sdkPath = dartGen
           ? path.join(testDir, '..', 'tool', 'input_sdk_src')
           : path.join(testDir, 'generated_sdk');
       var testSdk = new TypeResolver.fromDir(sdkPath, options);
-      var result = compile('dart:core', testSdk, options);
+      compile('dart:core', testSdk, options);
       var outputDir = new Directory(path.join(actualDir, 'core'));
       expect(outputDir.existsSync(), true,
           reason: '${outputDir.path} was created for dart:core');
     });
   });
 
   if (!dartGen) {
     test('devc jscodegen html_input.html', () {
       var filePath = path.join(inputDir, 'html_input.html');
       compilerMessages.writeln('// Messages from compiling html_input.html');
@@ skipping 18 matching lines @@
     print('[AnalysisEngine] error $message $exception');
   }
 
   @override void logError2(String message, Object exception) {
     print('[AnalysisEngine] error $message $exception');
   }
 
   void logInformation(String message, [CaughtException exception]) {}
   void logInformation2(String message, Object exception) {}
 }