Fix bugsnag-laravel#45

Author: ConradIrwin

src/Bugsnag/Notification.php

@@ -107,7 +107,11 @@ private function postWithCurl($url, $body)
         curl_setopt($http, CURLOPT_CONNECTTIMEOUT, $this->config->timeout);
         curl_setopt($http, CURLOPT_SSL_VERIFYPEER, false);
         curl_setopt($http, CURLOPT_VERBOSE, false);
-        curl_setopt($http, CURL_IPRESOLVE_V4, true);
+        if (defined('HHVM_VERSION')) {
+            curl_setopt($http, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
+        } else {
+            curl_setopt($http, CURL_IPRESOLVE_V4, true);
+        }
 
         if (!empty($this->config->curlOptions)) {
             foreach ($this->config->curlOptions as $option => $value)  {