Revert "Check error on select"

This reverts commit 1d77716d.

src/mserv.c

@@ -701,8 +701,6 @@ static INT32 AddToMasterServer(boolean firstadd)
 
 	M_Memcpy(&tset, &wset, sizeof (tset));
 	res = select(255, NULL, &tset, NULL, &select_timeout);
-	if (res == -1)
-		return ConnectionFailedwerrno(errno);
 	if (res == 0)/* nothing selected */
 	{
 		/*