Bugfix for old versions of libcurl (#3982)

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@5437 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_curl.c

@@ -104,7 +104,11 @@ static int curl_exec(struct ast_channel *chan, void *data)
 
 		curl_easy_setopt(curl, CURLOPT_URL, url);
 		curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
+#ifdef CURLOPT_WRITEDATA
 		curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&chunk);
+#else
+		curl_easy_setopt(curl, CURLOPT_WRITEINFO, (void *)&chunk);
+#endif
 		curl_easy_setopt(curl, CURLOPT_USERAGENT, "asterisk-libcurl-agent/1.0");
 
 		if (post_data) {