Fixing "Cannot remove ...: Permission denied" in File and bundle:: task

Signed-off-by: Pavel <proger.xp@gmail.com>

laravel/cli/tasks/bundle/providers/provider.php

@@ -54,6 +54,7 @@ abstract class Provider {
 
 		File::rmdir($work.'zip');
 
+		$zip->close();
 		@unlink($target);
 	}
 

laravel/file.php

@@ -273,7 +273,8 @@ class File {
 			}
 		}
 
-		if ($delete) rmdir($source);
+		unset($items);
+		if ($delete) @rmdir($source);
 
 		return true;
 	}
@@ -306,6 +307,7 @@ class File {
 			}
 		}
 
+		unset($items);
 		if ( ! $preserve) @rmdir($directory);
 	}