Set headers and headerLookup arrays in Message::__constructor to prevent warning

src/pjdietz/WellRESTed/Message.php

@@ -15,6 +15,7 @@ namespace pjdietz\WellRESTed;
  *
  * @property string body  Entity body of the message
  * @property-read array headers  Associative array of HTTP headers
+ * @property-read array headerLines  Numeric array of HTTP headers
  * @property string protocol  The protocol, e.g. HTTP
  * @property string protocolVersion  The version of the protocol
  */
@@ -57,6 +58,14 @@ abstract class Message
      */
     protected $protocolVersion = '1.1';
 
+    // -------------------------------------------------------------------------
+
+    public function __construct()
+    {
+        $this->headers = array();
+        $this->headerLines = array();
+    }
+
     // -------------------------------------------------------------------------
     // Accessors
 

src/pjdietz/WellRESTed/Request.php

@@ -84,6 +84,8 @@ class Request extends Message
      */
     public function __construct($uri = null, $method = 'GET')
     {
+        parent::__construct();
+
         if (!is_null($uri)) {
             $this->setUri($uri);
         }

src/pjdietz/WellRESTed/Response.php

@@ -51,12 +51,12 @@ class Response extends Message
      */
     public function __construct($statusCode = 500, $body = null, $headers = null)
     {
+        parent::__construct();
+
         $this->statusCode = $statusCode;
 
         if (is_array($headers)) {
             $this->headers = $headers;
-        } else {
-            $this->headers = array();
         }
 
         if (!is_null($body)) {