Merge #9535: Split CNode::cs_vSend: message processing and message sending

376b3c2 Make the cs_sendProcessing a LOCK instead of a TRY_LOCK (Matt Corallo)
d7c58ad Split CNode::cs_vSend: message processing and message sending (Matt Corallo)

src/net.h

@@ -618,6 +618,8 @@ public:
     std::list<CNetMessage> vProcessMsg;
     size_t nProcessQueueSize;
 
+    CCriticalSection cs_sendProcessing;
+
     std::deque<CInv> vRecvGetData;
     uint64_t nRecvBytes;
     std::atomic<int> nRecvVersion;