nghttpx: Fix TLS write limit does not work

src/shrpx_client_handler.cc

@@ -488,7 +488,7 @@ ClientHandler::ClientHandler(struct ev_loop *loop, int fd, SSL *ssl,
       rlimit_(loop, &rev_, get_config()->read_rate, get_config()->read_burst),
       loop_(loop), dconn_pool_(dconn_pool), http2session_(nullptr),
       http1_connect_blocker_(nullptr), ssl_(ssl), worker_stat_(worker_stat),
-      last_write_time_(0), warmup_writelen_(0),
+      last_write_time_(0.), warmup_writelen_(0),
       left_connhd_len_(NGHTTP2_CLIENT_CONNECTION_PREFACE_LEN),
       tls_last_writelen_(0), tls_last_readlen_(0), fd_(fd),
       should_close_after_write_(false), tls_handshake_(false),

src/shrpx_client_handler.h

@@ -169,7 +169,7 @@ private:
   ConnectBlocker *http1_connect_blocker_;
   SSL *ssl_;
   WorkerStat *worker_stat_;
-  int64_t last_write_time_;
+  double last_write_time_;
   size_t warmup_writelen_;
   // The number of bytes of HTTP/2 client connection header to read
   size_t left_connhd_len_;