string formatting: fix 15+ printf-style format strings

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/url.c b/lib/url.c
index 347092d59..bc95c9a29 100644
--- a/lib/url.c
+++ b/lib/url.c
@@ -5336,7 +5336,7 @@ static CURLcode create_conn(struct SessionHandle *data,
   if(reuse && !force_reuse && IsPipeliningPossible(data, conn_temp)) {
     size_t pipelen = conn_temp->send_pipe->size + conn_temp->recv_pipe->size;
     if(pipelen > 0) {
-      infof(data, "Found connection %ld, with requests in the pipe (%zd)\n",
+      infof(data, "Found connection %ld, with requests in the pipe (%zu)\n",
             conn_temp->connection_id, pipelen);
 
       if(conn_temp->bundle->num_connections < max_host_connections &&