Fixed another instance of only checking for EAGAIN from a socket, from Ala-lala

sc2/src/uqm/supermelee/netplay/netmelee.c

@@ -16,6 +16,8 @@
  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
+#define PORT_WANT_ERRNO
+#include "port.h"
 #include "netmelee.h"
 #include "libs/alarm.h"
 #include "libs/callback.h"
@@ -197,7 +199,7 @@ flushPacketQueues(void) {
 			continue;
 
 		flushStatus = flushPacketQueue(conn);
-		if (flushStatus == -1 && errno != EAGAIN)
+		if (flushStatus == -1 && errno != EAGAIN && errno != EWOULDBLOCK)
 			closePlayerNetworkConnection(player);
 	}
 }

sc2/src/uqm/supermelee/netplay/packetq.c

@@ -104,8 +104,8 @@ queuePacket(NetConnection *conn, Packet *packet) {
 
 // If an error occurs during sending, we leave the unsent packets in
 // the queue, and let the caller decide what to do with them.
-// This function may return -1 with errno EAGAIN if we're waiting for
-// the other party to act first.
+// This function may return -1 with errno EAGAIN or EWOULDBLOCK
+// if we're waiting for the other party to act first.
 static int
 flushPacketQueueLinks(NetConnection *conn, PacketQueueLink **first) {
 	PacketQueueLink *link;