setup: fix localhgenv
It should return env as a dict instead of None.
--- a/setup.py Tue Jun 27 17:24:31 2017 -0700
+++ b/setup.py Wed Jun 28 06:49:01 2017 -0700
@@ -227,6 +227,7 @@
# SystemRoot is required by Windows to load various DLLs. See:
# https://bugs.python.org/issue13524#msg148850
env['SystemRoot'] = os.environ['SystemRoot']
+ return env
version = ''