telepathy-qt: Tests: Fix account-manager.py python3 port

[Alexandr Akulich]

Module: telepathy-qt
Branch: master
Commit: 166ebe8aa528d75b03b5288c69780b71809df2bd
URL:    http://cgit.freedesktop.org/telepathy/telepathy-qt/commit/?id=166ebe8aa528d75b03b5288c69780b71809df2bd

Author: Alexander Akulich <akulichalexander at gmail.com>
Date:   Tue Oct 15 00:21:38 2019 +0300

Tests: Fix account-manager.py python3 port

---

 tests/lib/python/account-manager.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/lib/python/account-manager.py b/tests/lib/python/account-manager.py
index 35392738..cad1fc42 100755
--- a/tests/lib/python/account-manager.py
+++ b/tests/lib/python/account-manager.py
@@ -188,7 +188,7 @@ class Account(Object):
                 (Connection_Presence_Type_Offline, 'offline', ''),
                 signature='uss')
         self._avatar = dbus.Struct(
-                (dbus.ByteArray(''), 'image/png'),
+                (dbus.ByteArray(bytes()), 'image/png'),
                 signature='ays')
         self._interfaces = [ACCOUNT_IFACE_AVATAR_IFACE,]