david a246aaf469 Only increase max_successful_tryno when we have a positive response to a probe; ...

i.e., the probe didn't just time out. This was the case before r11253 when I
mistakenly removed it. I meant only to allow ultrascan_adjust_timing to be
called when rcvdtime == NULL, but as a side effect I also allowed
max_successful_tryno to increase in that case too. I was able to get that bit
of code to run with rcvdtime == NULL in a normal scan, but I don't think it
happens often.

I also improved the comments in that block of code.

2008-12-23 02:29:04 +00:00

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