- Tommie Gannert pointed out a silly bug in ares_process_fd() since i…
check for broken connections like ares_process() did. Based on that, I
merged the two functions into a single generic one with two front-ends.
Intentionally avoid checking if the address of SystemFunction036, a.k.a.
RtlGenRandom, has been located or not. This function is only available on
WinXP and later. When unavailable c-ares uses portable rand() function.