plugin merge-requests: fixed labels (they were using textbox instead of list)

src/plugins/plugin_misc_merge_requests.py

@@ -165,7 +165,8 @@ class MergeRequests(object):
             sub_id=sub_id,
             rsm_request=rsm_request,
             extra=extra,
-            form_ns=NS_MERGE_REQUESTS)
+            form_ns=NS_MERGE_REQUESTS,
+            filters = {u'labels': self._s.textbox2ListFilter})
         parsed_patches = []
         if extra.get('parse', False):
             for ticket in tickets_xmlui: