PY3: fix "TabError: inconsistent use of tabs and spaces"

Signed-off-by: Noel Power <noel.power@suse.com>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

(cherry-picked from Samba commit e8fec94827c933041acd5b447eeeefd0b7b507ef)

lib/wind/UnicodeData.py

@@ -50,7 +50,7 @@ def read(filename):
             continue
         f = l.split(';')
         key = int(f[0], 0x10)
-	if key in ret:
+        if key in ret:
             raise Exception('Duplicate key in UnicodeData')
         ret[key] = f[1:]
     ud.close()