remove the archive after a testcase is done

apps/files_archive/tests/storage.php

@@ -10,9 +10,15 @@ class Test_Filestorage_Archive_Zip extends Test_FileStorage {
 	/**
 	 * @var string tmpDir
 	 */
+	private $tmpFile;
+	
 	public function setUp(){
-		$tmpFile=OC_Helper::tmpFile('.zip');
-		$this->instance=new OC_Filestorage_Archive(array('archive'=>$tmpFile));
+		$this->tmpFile=OC_Helper::tmpFile('.zip');
+		$this->instance=new OC_Filestorage_Archive(array('archive'=>$this->tmpFile));
+	}
+
+	public function tearDown(){
+		unlink($this->tmpFile);
 	}
 }