Revert "reduce idle CPU consumption by the stream listener"

This reverts commit 1d6c8f3.

src/tateyama/endpoint/stream/stream.h

@@ -397,11 +397,10 @@ class connection_socket
     std::shared_ptr<stream_socket> accept(const std::function<void(void)>& cleanup = [](){} ) {
         cleanup();
 
+        struct timeval tv{};
+        tv.tv_sec = 1;  // 1(S)
+        tv.tv_usec = 0;
         while (true) {
-            struct timeval tv{};
-            tv.tv_sec = 1;  // 1(S)
-            tv.tv_usec = 0;
-
             FD_ZERO(&fds_);  // NOLINT
             if (is_socket_available()) {
                 FD_SET(socket_, &fds_);  // NOLINT