Fix exit detection for try statements.

pkg/analyzer/lib/src/generated/resolver.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.resolver;
 
 import 'dart:collection';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
@@ skipping 3772 matching lines @@
   }
 
   @override
   bool visitThisExpression(ThisExpression node) => false;
 
   @override
   bool visitThrowExpression(ThrowExpression node) => true;
 
   @override
   bool visitTryStatement(TryStatement node) {
-    if (_nodeExits(node.body)) {
+    if (_nodeExits(node.finallyBlock)) {
       return true;
     }
-    Block finallyBlock = node.finallyBlock;
-    if (_nodeExits(finallyBlock)) {
-      return true;
+    if (!_nodeExits(node.body)) {
+      return false;
     }
-    return false;
+    for (CatchClause c in node.catchClauses) {
+      if (!_nodeExits(c.body)) {
+        return false;
+      }
+    }
+    return true;
   }
 
   @override
   bool visitTypeName(TypeName node) => false;
 
   @override
   bool visitVariableDeclaration(VariableDeclaration node) {
     Expression initializer = node.initializer;
     if (initializer != null) {
       return initializer.accept(this);
@@ skipping 7119 matching lines @@
       return null;
     }
     if (identical(node.staticElement, variable)) {
       if (node.inSetterContext()) {
         result = true;
       }
     }
     return null;
   }
 }