Fix exceptions throw() and virtual destructor

Reviewed By: yishan


git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@664897 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/compiler/cpp/src/generate/t_cpp_generator.cc b/compiler/cpp/src/generate/t_cpp_generator.cc
index 5662227..90d7de8 100644
--- a/compiler/cpp/src/generate/t_cpp_generator.cc
+++ b/compiler/cpp/src/generate/t_cpp_generator.cc
@@ -393,6 +393,10 @@
     out << " {} " << endl;
   }
   
+  out <<
+    endl <<
+    indent() << "virtual ~" << tstruct->get_name() << "() throw() {}" << endl << endl;
+
   // Declare all fields
   for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) {
     indent(out) <<