fix vim format line

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@14856 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/mod/endpoints/mod_opal/mod_opal.cpp

@@ -1464,5 +1464,5 @@ switch_status_t FSMediaStream::write_frame(const switch_frame_t *frame, switch_i
  * c-basic-offset:4
  * End:
  * For VIM:
- * vim:set softtabstop=4 shiftwidth=4 tabstop=4: expandtabs:
+ * vim:set softtabstop=4 shiftwidth=4 tabstop=4:s:
  */