Correction libération ZendAfi_Auth instance

tests/library/Class/UsersTest.php

@@ -773,6 +773,12 @@ class UsersGetIdentityWithSessionErrorTest extends Storm_Test_ModelTestCase {
 			);
 		$this->assertNull(Class_Users::getIdentity());
 	}
+
+
+	public function tearDown() {
+		ZendAfi_Auth::setInstance(null);
+		parent::tearDown();
+	}
 }