histedit: remove trailing space from warning message

hgext/histedit.py

@@ -1696,7 +1696,7 b' def _histedit(ui, repo, state, *freeargs'
                 hastags = len(tags)
     if hastags:
         if ui.promptchoice(_('warning: tags associated with the given'
-                             ' changeset will be lost after histedit. \n'
+                             ' changeset will be lost after histedit.\n'
                              'do you want to continue (yN)? $$ &Yes $$ &No'),
                            default=1):
             raise error.Abort(_('histedit cancelled\n'))

tests/test-histedit-edit.t

@@ -496,7 +496,7 b' warn the user on editing tagged commits'
   tip                                1:bd7ee4f3939b
   a                                  0:a8a82d372bb3
   $ hg histedit
-  warning: tags associated with the given changeset will be lost after histedit. 
+  warning: tags associated with the given changeset will be lost after histedit.
   do you want to continue (yN)?  n
   abort: histedit cancelled