netbase: Do not print an error on connection timeouts through proxy

If a timeout happens while reading the proxy response, this effectively
means we timed out while connecting to the remote node. This is very
common for Tor, so do not print an error message.

src/netbase.cpp

@@ -360,8 +360,15 @@ static bool Socks5(const std::string& strDest, int port, const ProxyCredentials
     char pchRet2[4];
     if ((recvr = InterruptibleRecv(pchRet2, 4, SOCKS5_RECV_TIMEOUT, hSocket)) != IntrRecvError::OK) {
         CloseSocket(hSocket);
+        if (recvr == IntrRecvError::Timeout) {
+            /* If a timeout happens here, this effectively means we timed out while connecting
+             * to the remote node. This is very common for Tor, so do not print an
+             * error message. */
+            return false;
+        } else {
             return error("Error while reading proxy response");
         }
+    }
     if (pchRet2[0] != 0x05) {
         CloseSocket(hSocket);
         return error("Proxy failed to accept request");