Fixing bug in Ethernet (recv() in socket.cpp). (Paul Stoffregen)

http://code.google.com/p/arduino/issues/detail?id=670

Author: damellis

utility/socket.cpp

@@ -151,7 +151,7 @@ uint16_t recv(SOCKET s, uint8_t *buf, uint16_t len)
   {
     // No data available.
     uint8_t status = W5100.readSnSR(s);
-    if ( s == SnSR::LISTEN || s == SnSR::CLOSED || s == SnSR::CLOSE_WAIT )
+    if ( status == SnSR::LISTEN || status == SnSR::CLOSED || status == SnSR::CLOSE_WAIT )
     {
       // The remote end has closed its side of the connection, so this is the eof state
       ret = 0;