changed the way to fix ERROR_BROKEN_PIPE.

improved socket error translation

qse/lib/awk/std.c

@@ -1729,16 +1729,6 @@ static qse_ssize_t awk_rio_console (
 				if (sio) qse_sio_close (sio);
 			}
 		
-		#if defined(_WIN32)
-			/* DIRTY HACK FOR WIN32.
-			 *  ReadFile returns failure with ERROR_BROKEN_PIPE 
-			 *  when an anonymous pipe is closed. it doesn't return EOF.
-			 *  Let me handle that specially here for console only.
-			 */
-			if (nn <= -1 && 
-			    qse_sio_geterrnum ((qse_sio_t*)riod->handle) == QSE_SIO_EPIPE) return 0;
-		#endif
-
 			return nn;
 		}