Remove unnecessary condition judgement

src/brpc/policy/http_rpc_protocol.cpp

@@ -771,8 +771,6 @@ HttpResponseSender::~HttpResponseSender() {
         ParseContentType(req_header->content_type()) == HTTP_CONTENT_GRPC;
 
     if (cntl->Failed()) {
-        // TODO(zhujiashun): really need this?
-        if (!grpc_protocol) {
         // Set status-code with default value(converted from error code)
         // if user did not set it.
         if (res_header->status_code() == HTTP_STATUS_OK) {
@@ -789,7 +787,6 @@ HttpResponseSender::~HttpResponseSender() {
         res_header->set_content_type(common->CONTENT_TYPE_TEXT);
         cntl->response_attachment().clear();
         cntl->response_attachment().append(cntl->ErrorText());
-        }
     } else if (cntl->has_progressive_writer()) {
         // Transfer-Encoding is supported since HTTP/1.1
         if (res_header->major_version() < 2 && !res_header->before_http_1_1()) {