[PATCH] ws2_32: handle error return from get_sock_fd (Coverity)

[Marcus Meissner]

1147950 Argument cannot be negative
---
 dlls/ws2_32/socket.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/dlls/ws2_32/socket.c b/dlls/ws2_32/socket.c
index 0391554..3bfd561 100644
--- a/dlls/ws2_32/socket.c
+++ b/dlls/ws2_32/socket.c
@@ -1178,6 +1178,11 @@ static int set_ipx_packettype(int sock, int ptype)
     int fd = get_sock_fd( sock, 0, NULL ), ret = 0;
     TRACE("trying to set IPX_PTYPE: %d (fd: %d)\n", ptype, fd);
 
+    if (fd == -1) {
+        ERR("IPX: %d is not an IPX socket.\n", sock);
+        return SOCKET_ERROR;
+    }
+
     /* We try to set the ipx type on ipx socket level. */
 #ifdef SOL_IPX
     if(setsockopt(fd, SOL_IPX, IPX_TYPE, &ptype, sizeof(ptype)) == -1)
-- 
1.8.4