[gnome-settings-daemon] tests: Error out if check is called but deps are missing

[Bastien Nocera <hadess src gnome org>]

commit 5fa56454045e972770860dd924d3171057883200
Author: Bastien Nocera <hadess hadess net>
Date:   Mon Jan 16 19:22:55 2017 +0100

    tests: Error out if check is called but deps are missing
    
    Don't skip the tests if python-dbusmock is not installed, fail instead.
    
    That would explain why "make distcheck" passed happily in more recent
    releases...

 tests/gsdtestcase.py |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/tests/gsdtestcase.py b/tests/gsdtestcase.py
index 675ac25..4dec7b2 100644
--- a/tests/gsdtestcase.py
+++ b/tests/gsdtestcase.py
@@ -20,7 +20,7 @@ try:
     import dbusmock
 except ImportError:
     sys.stderr.write('You need python-dbusmock (http://pypi.python.org/pypi/python-dbusmock) for this test 
suite.\n')
-    sys.exit(0)
+    sys.exit(1)
 
 try:
     from gi.repository import Gio