Fix corruption of _local_data cache when switching language

issue2233
review181001

trytond/model/browse.py

@@ -264,7 +264,7 @@ class BrowseRecord(object):
         self._context = self._context.copy()
         prev_lang = self._context.get('language') or 'en_US'
         self._context['language'] = lang
-        for cache in (self._cache, self._local_data):
+        for cache in (self._cache, {self._model_name: self._local_data}):
             language_cache = cache.setdefault('_language_cache', {})
             for model in cache:
                 if model == '_language_cache':