netstd fix IDE warning
diff --git a/compiler/cpp/src/thrift/generate/t_netstd_generator.cc b/compiler/cpp/src/thrift/generate/t_netstd_generator.cc
index b90f71a..5048c0e 100644
--- a/compiler/cpp/src/thrift/generate/t_netstd_generator.cc
+++ b/compiler/cpp/src/thrift/generate/t_netstd_generator.cc
@@ -1517,7 +1517,7 @@
         }
     }
 
-    out << indent() << "sb.Append(\")\");" << endl
+    out << indent() << "sb.Append(')');" << endl
         << indent() << "return sb.ToString();" << endl;
     indent_down();
     out << indent() << "}" << endl;