wafsamba: Do not use 'rU' as the 'U' is deprecated in Python 3.9

See https://docs.python.org/3.9/whatsnew/3.9.html#changes-in-the-python-api

"open(), io.open(), codecs.open() and fileinput.FileInput no longer accept 'U'
(“universal newline”) in the file mode. This flag was deprecated since Python
3.3. In Python 3, the “universal newline” is used by default when a file is
open in text mode. The newline parameter of open() controls how universal
newlines works."

BUG: https://bugzilla.samba.org/show_bug.cgi?id=14266

Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Thu Feb  6 07:30:13 UTC 2020 on sn-devel-184

(cherry picked from commit 52722746a5eb40c309ba59f78bd8e3d897417bdc)

diff --git a/buildtools/wafsamba/samba_utils.py b/buildtools/wafsamba/samba_utils.py
index ad97de1859ba24c4afd5106b4f9694b0dc855643..be022adc8f59c7000413a02cae894a2b355a997b 100644 (file)
--- a/buildtools/wafsamba/samba_utils.py
+++ b/buildtools/wafsamba/samba_utils.py
@@ -700,7 +700,7 @@ def PROCESS_SEPARATE_RULE(self, rule):
             cache[node] = True
             self.pre_recurse(node)
             try:
-                function_code = node.read('rU', None)
+                function_code = node.read('r', None)
                 exec(compile(function_code, node.abspath(), 'exec'), self.exec_dict)
             finally:
                 self.post_recurse(node)