evolve: move a code block to have right value in has_some_val
Because of this we were having wrong value of has_some_val and
had some buggy behavior which is being fixed by this patch.
Fixed behavior is reflected by the changes in test file.
#!/bin/sh
. $TESTDIR/testlib/pythonpath.sh
# This file holds logic that is used in many tests.
# It can be called in a test like this:
# $ . "$TESTDIR/testlib/topic_setup.sh"
# Enable obsolete markers and enable extensions
cat >> $HGRCPATH << EOF
[experimental]
evolution=createmarkers,exchange
[extensions]
rebase=
topic=
EOF