small net cleanup

- add comment for disabling sigpipe
- add closing comment in compat.h
- remove redundant check in net.h

src/compat.h

@@ -1,5 +1,5 @@
 // Copyright (c) 2009-2010 Satoshi Nakamoto
-// Copyright (c) 2009-2013 The Bitcoin developers
+// Copyright (c) 2009-2014 The Bitcoin developers
 // Distributed under the MIT/X11 software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
@@ -59,4 +59,4 @@ typedef u_int SOCKET;
 #define SOCKET_ERROR        -1
 #endif
 
-#endif
+#endif // _BITCOIN_COMPAT_H

src/net.h

@@ -356,12 +356,11 @@ public:
 
     ~CNode()
     {
-        if (hSocket != INVALID_SOCKET)
-        {
-            CloseSocket(hSocket);
-        }
+        CloseSocket(hSocket);
+
         if (pfilter)
             delete pfilter;
+
         GetNodeSignals().FinalizeNode(GetId());
     }
 

src/netbase.cpp

@@ -334,6 +334,7 @@ bool static ConnectSocketDirectly(const CService &addrConnect, SOCKET& hSocketRe
 
 #ifdef SO_NOSIGPIPE
     int set = 1;
+    // Different way of disabling SIGPIPE on BSD
     setsockopt(hSocket, SOL_SOCKET, SO_NOSIGPIPE, (void*)&set, sizeof(int));
 #endif