commands: add missing wlock to graft

mercurial/commands.py

@@ -2673,6 +2673,8 b' def graft(ui, repo, *revs, **opts):'
     if not revs:
         return -1
 
+    wlock = repo.wlock()
+    try:
     for pos, ctx in enumerate(repo.set("%ld", revs)):
         current = repo['.']
 
@@ -2719,6 +2721,8 b' def graft(ui, repo, *revs, **opts):'
             date = opts['date']
         repo.commit(text=ctx.description(), user=user,
                     date=date, extra=extra, editor=editor)
+    finally:
+        wlock.release()
 
     # remove state when we complete successfully
     if not opts.get('dry_run') and os.path.exists(repo.join('graftstate')):

tests/test-graft.t

@@ -242,12 +242,12 b' Graft again onto another branch should p'
   2:5c095ad7e90f871700f02dd1fa5012cb4498a2d4
 
   $ hg log --debug -r tip
-  changeset:   13:39bb1d13572759bd1e6fc874fed1b12ece047a18
+  changeset:   13:95adbe5de6b10f376b699ece9ed5a57cd7b4b0f6
   tag:         tip
   phase:       draft
   parent:      12:b592ea63bb0c19a6c5c44685ee29a2284f9f1b8f
   parent:      -1:0000000000000000000000000000000000000000
-  manifest:    13:0780e055d8f4cd12eadd5a2719481648f336f7a9
+  manifest:    13:9944044f82a462bbaccc9bdf7e0ac5b811db7d1b
   user:        foo
   date:        Thu Jan 01 00:00:00 1970 +0000
   files+:      b