use new robust mutex, circurar; rm timeout mutex.

lichao

2021-04-28 a6f67b4249525089fb97eb9418c7014f66c2a000

 src/msg.cpp

@@ -20,6 +20,5 @@

namespace bhome_msg
{
const uint32_t kMsgTag = 0xf1e2d3c4;

} // namespace bhome_msg