[PATCH 2 of 5] tests: clarify demandimport disabled state

[timeless]

# HG changeset patch
# User timeless <timeless at mozdev.org>
# Date 1474429177 0
#      Wed Sep 21 03:39:37 2016 +0000
# Node ID 982fe7cdb28bb263a96b1bc2c9c3b8aedb025ab6
# Parent  24d85146985b7d2fef3c27b97d4be983e57ae5c7
# Available At https://bitbucket.org/timeless/mercurial-crew
#              hg pull https://bitbucket.org/timeless/mercurial-crew -r 982fe7cdb28b
tests: clarify demandimport disabled state

diff -r 24d85146985b -r 982fe7cdb28b tests/test-demandimport.py
--- a/tests/test-demandimport.py	Wed Sep 21 02:46:59 2016 +0000
+++ b/tests/test-demandimport.py	Wed Sep 21 03:39:37 2016 +0000
@@ -65,6 +65,7 @@
 
 demandimport.disable()
 os.environ['HGDEMANDIMPORT'] = 'disable'
+# this enable call should not actually enable demandimport!
 demandimport.enable()
 from mercurial import node
 print("node =", f(node))