fix all instances of "the the"

pkg/analyzer/lib/src/generated/error_verifier.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 analyzer.src.generated.error_verifier;
 
 import 'dart:collection';
 import "dart:math" as math;
 
 import 'package:analyzer/dart/ast/ast.dart';
@@ skipping 5023 matching lines @@
    * See [CompileTimeErrorCode.RETHROW_OUTSIDE_CATCH].
    */
   void _checkForRethrowOutsideCatch(RethrowExpression expression) {
     if (!_isInCatchClause) {
       _errorReporter.reportErrorForNode(
           CompileTimeErrorCode.RETHROW_OUTSIDE_CATCH, expression);
     }
   }
 
   /**
-   * Check that if the the given constructor [declaration] is generative, then
+   * Check that if the given constructor [declaration] is generative, then
    * it does not have an expression function body.
    *
    * See [CompileTimeErrorCode.RETURN_IN_GENERATIVE_CONSTRUCTOR].
    */
   void _checkForReturnInGenerativeConstructor(
       ConstructorDeclaration declaration) {
     // ignore factory
     if (declaration.factoryKeyword != null) {
       return;
     }
@@ skipping 1179 matching lines @@
 class _InvocationCollector extends RecursiveAstVisitor {
   final List<String> superCalls = <String>[];
 
   @override
   visitMethodInvocation(MethodInvocation node) {
     if (node.target is SuperExpression) {
       superCalls.add(node.methodName.name);
     }
   }
 }