dispatch: add newline after ui.log "ui blocked ms" message

Differential Revision: https://phab.mercurial-scm.org/D5573

mercurial/dispatch.py

@@ -248,7 +248,7 b' def dispatch(req):'
             req.ui.flush()
             if req.ui.logblockedtimes:
                 req.ui._blockedtimes['command_duration'] = duration * 1000
-                req.ui.log('uiblocked', 'ui blocked ms',
+                req.ui.log('uiblocked', 'ui blocked ms\n',
                            **pycompat.strkwargs(req.ui._blockedtimes))
             return_code = ret & 255
             req.ui.log(