fwts: s3 and s4 tests have infinite loop

[Colin Ian King]

Both the S3 and S4 tests have a bug:

loop_condition: If j < awake_delay / 1000 is initially true then it will remain true.
352 for (j = 0; j < awake_delay / 1000; i++) {
353 snprintf(buffer, sizeof(buffer), "(Waiting %d/%d seconds)",
354 j + 1, awake_delay / 1000);
355 fwts_progress_message(fw, percent, buffer);
356 sleep(1);

loop_bottom: Bottom of the loop.
357 }

..resulting in an infinite loop.