curl_slist_append.3: add error checking to the example

diff --git a/docs/libcurl/curl_slist_append.3 b/docs/libcurl/curl_slist_append.3
index 529560e8ae517cf74f1ff421087fb1b15be02c93..1a0a65796e07af0e01808dbc2af5b0ca8e2f9f8f 100644 (file)
--- a/docs/libcurl/curl_slist_append.3
+++ b/docs/libcurl/curl_slist_append.3
@@ -5,7 +5,7 @@
 .\" *                            | (__| |_| |  _ <| |___
 .\" *                             \___|\___/|_| \_\_____|
 .\" *
-.\" * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
+.\" * Copyright (C) 1998 - 2015, Daniel Stenberg, <daniel@haxx.se>, et al.
 .\" *
 .\" * This software is licensed as described in the file COPYING, which
 .\" * you should have received as part of this distribution. The terms
@@ -46,6 +46,10 @@ pointer is returned.
  struct curl_slist *slist=NULL;
 
  slist = curl_slist_append(slist, "pragma:");
+
+ if (slist == NULL)
+   return -1;
+
  curl_easy_setopt(handle, CURLOPT_HTTPHEADER, slist);
 
  curl_easy_perform(handle);