[pygobject] tests: set DBUS_SESSION_BUS_ADDRESS to some invalid value to disable dbus

[Christoph Reiter <creiter src gnome org>]

commit 9a9bb732752e7bec42a1c13f080b37536876e3e0
Author: Christoph Reiter <reiter christoph gmail com>
Date:   Sat Feb 10 11:16:49 2018 +0100

    tests: set DBUS_SESSION_BUS_ADDRESS to some invalid value to disable dbus
    
    While keepig it empty works on Linux, on Windows setting an invalid
    value is needed to disable dbus.

 tests/runtests.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/tests/runtests.py b/tests/runtests.py
index 7cc7d508..b8f64b99 100755
--- a/tests/runtests.py
+++ b/tests/runtests.py
@@ -44,7 +44,7 @@ if pid >= 0:
     os.environ["DBUS_SESSION_BUS_ADDRESS"] = addr
     atexit.register(os.kill, pid, signal.SIGKILL)
 else:
-    os.environ["DBUS_SESSION_BUS_ADDRESS"] = ""
+    os.environ["DBUS_SESSION_BUS_ADDRESS"] = "."
 
 mydir = os.path.dirname(os.path.abspath(__file__))
 tests_builddir = os.path.abspath(os.environ.get('TESTS_BUILDDIR', os.path.dirname(__file__)))