python:tests: Initialize global variable

Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

diff --git a/python/samba/tests/source_chars.py b/python/samba/tests/source_chars.py
index 3f306f12f9a52410c1e5410c87b937b0946d95f4..a5e9fc2fb143668f01b0dbc469273f336132ac7e 100644 (file)
--- a/python/samba/tests/source_chars.py
+++ b/python/samba/tests/source_chars.py
@@ -276,6 +276,10 @@ class CharacterTests(TestCase):
 
 def check_file_text():
     """If called directly as a script, count the found characters."""
+    global ROOT
+    if not ROOT:
+        ROOT = _find_root()
+
     counts = Counter()
     for name in iter_source_files():
         fullname = os.path.join(ROOT, name)