HHVM compatibility

Author: milo

src/Github/Http/CurlClient.php

@@ -65,7 +65,6 @@ protected function process(Request $request)
 		$hardOptions = [
 			CURLOPT_FOLLOWLOCATION => FALSE, # Github sets the Location header for 201 code too and redirection is not required for us
 			CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
-			CURLOPT_PROTOCOLS => CURLPROTO_HTTP | CURLPROTO_HTTPS,
 			CURLOPT_CUSTOMREQUEST => $request->getMethod(),
 			CURLOPT_NOBODY => $request->isMethod(Request::HEAD),
 			CURLOPT_URL => $request->getUrl(),
@@ -88,6 +87,10 @@ protected function process(Request $request)
 			},
 		];
 
+		if (defined('CURLOPT_PROTOCOLS')) {  # HHVM issue. Even cURL v7.26.0, constants are missing.
+			$hardOptions[CURLOPT_PROTOCOLS] = CURLPROTO_HTTP | CURLPROTO_HTTPS;
+		}
+
 		if (!$this->curl) {
 			$this->curl = curl_init();
 			if ($this->curl === FALSE) {