Use CURL_SOCKET_BAD.

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/ftp.c b/lib/ftp.c
index 72f55ebed..a14a786f4 100644
--- a/lib/ftp.c
+++ b/lib/ftp.c
@@ -992,7 +992,7 @@ static CURLcode ftp_state_use_port(struct connectdata *conn,
   /* we set the secondary socket variable to this for now, it is only so that
      the cleanup function will close it in case we fail before the true
      secondary stuff is made */
-  if(-1 != conn->sock[SECONDARYSOCKET])
+  if(CURL_SOCKET_BAD != conn->sock[SECONDARYSOCKET])
     sclose(conn->sock[SECONDARYSOCKET]);
   conn->sock[SECONDARYSOCKET] = portsock;