tests: adapt now that Mercurial clears the merge state for empty wdir `hg evolve` forgot to clear the merge state when its attempt to commit resulted in no commit because the working copy had no changes. That resulted in test-evolve-issue5967.t showing a conflict state that shouldn't be there. The responsibility for clearing the merge state was moved into Mercurial in Mercurial in 6a34e438461b (commit: clear resolved mergestate even if working copy is clean, 2020-02-28), so the bug is now fixed in `hg evolve`, which impacts that test case. CORE-TEST-OUTPUT-UPDATE: 6a34e438461b

--- a/tests/test-evolve-issue5967.t	Fri Mar 06 21:37:28 2020 +0700
+++ b/tests/test-evolve-issue5967.t	Wed Mar 04 15:21:32 2020 -0800
@@ -69,6 +69,6 @@
        rewritten(description, content) as 4d6fec23dcc4 using amend by test (Thu Jan 01 00:00:00 1970 +0000)
   
   $ hg olog --hidden --all 1
-  %  dd9b5dd30cd6 (1) banana
+  x  dd9b5dd30cd6 (1) banana
        pruned using evolve by test (Thu Jan 01 00:00:00 1970 +0000)