ffixed variable name typo

Author: detain

src/xmlapi.php

@@ -742,8 +742,8 @@ private function curl_query($url, $postdata, $authstr)
         // Increase buffer size to avoid "funny output" exception
         curl_setopt($curl, CURLOPT_BUFFERSIZE, 131072);
         // set connect timeout to 10min, timeout to 20min
-        curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 600); 
-        curl_setopt($ch, CURLOPT_TIMEOUT, 1200); 
+        curl_setopt($curl, CURLOPT_CONNECTTIMEOUT, 600); 
+        curl_setopt($curl, CURLOPT_TIMEOUT, 1200); 
 
         // Pass authentication header
         $header[0] =$authstr .