unify behaviour with tcp/udp read/write

src/i_socket.c

@@ -95,10 +95,10 @@ TR_socketSend(void * _this, TR_RemoteData data)
             case ENOMEM:
                 // these are fatal and should lead to a shutown
                 // of the whole application...
-                return 0;
+                return -1;
 
             case (EAGAIN|EWOULDBLOCK):
-                return -1;
+                return FALSE;
 
             case ECONNRESET:
                 // this is a remote close...

src/udp_socket.c

@@ -67,12 +67,12 @@ udpSocketRecv(TR_Socket this, size_t size)
 			&remote->addrlen);
 
 	if (-1 == received) {
-		rdata = TR_new(TR_RemoteData, NULL, received, remote);
+		TR_delete(remote);
+		rdata = NULL;
 	} else {
 		rdata = TR_new(TR_RemoteData, buffer, received, remote);
-	}
-
 		rdata->free_remote = 1;
+	}
 
 	return rdata;
 }