add default value

Author: SG5

lib/BlockingDriver.php

@@ -203,7 +203,7 @@ public function unlink($path) {
     /**
      * {@inheritdoc}
      */
-    public function mkdir($path, $mode = 0644, $recursive) {
+    public function mkdir($path, $mode = 0644, $recursive = false) {
         return new Success((bool) @\mkdir($path, $mode, $recursive));
     }
 

lib/Driver.php

@@ -132,7 +132,7 @@ public function unlink($path);
      * @param bool $recursive
      * @return \Amp\Promise
      */
-    public function mkdir($path, $mode = 0644, $recursive);
+    public function mkdir($path, $mode = 0644, $recursive = false);
 
     /**
      * Delete a directory

lib/EioDriver.php

@@ -356,7 +356,7 @@ private function onUnlink($data, $result, $req) {
     /**
      * {@inheritdoc}
      */
-    public function mkdir($path, $mode = 0644, $recursive) {
+    public function mkdir($path, $mode = 0644, $recursive = false) {
         \call_user_func($this->incrementor, 1);
         $promisor = new Deferred;
         $priority = \EIO_PRI_DEFAULT;

lib/UvDriver.php

@@ -300,7 +300,7 @@ public function unlink($path) {
     /**
      * {@inheritdoc}
      */
-    public function mkdir($path, $mode = 0644, $recursive) {
+    public function mkdir($path, $mode = 0644, $recursive = false) {
         $this->reactor->addRef();
         $promisor = new Deferred;