Combinations "-c -a" and "-c -u" give same output as combination "-c -q" instead of just "-c"

[Erik Auerswald]

Both options -a (--alive) and -u (--unreachable) should probably just be ignored with -c N (--count N), but they seem to have the same effect as -q (--quiet).

fping version:

$ fping -v
fping: Version 5.1

Expected behavior:

$ fping -c3 8.8.8.{7,8}
8.8.8.8 : [0], 64 bytes, 74.9 ms (74.9 avg, 0% loss)
8.8.8.7 : [0], timed out (NaN avg, 100% loss)
8.8.8.8 : [1], 64 bytes, 63.8 ms (69.3 avg, 0% loss)
8.8.8.7 : [1], timed out (NaN avg, 100% loss)
8.8.8.8 : [2], 64 bytes, 73.8 ms (70.8 avg, 0% loss)
8.8.8.7 : [2], timed out (NaN avg, 100% loss)

8.8.8.7 : xmt/rcv/%loss = 3/0/100%
8.8.8.8 : xmt/rcv/%loss = 3/3/0%, min/avg/max = 63.8/70.8/74.9

$ fping -c3 -q 8.8.8.{7,8}
8.8.8.7 : xmt/rcv/%loss = 3/0/100%
8.8.8.8 : xmt/rcv/%loss = 3/3/0%, min/avg/max = 60.8/61.7/62.4

Unexpected behavior:

$ fping -c3 -a 8.8.8.{7,8}
8.8.8.7 : xmt/rcv/%loss = 3/0/100%
8.8.8.8 : xmt/rcv/%loss = 3/3/0%, min/avg/max = 72.8/76.3/82.1

$ fping -c3 -u 8.8.8.{7,8}
8.8.8.7 : xmt/rcv/%loss = 3/0/100%
8.8.8.8 : xmt/rcv/%loss = 3/3/0%, min/avg/max = 50.1/55.6/65.2

(I have noticed this while looking into issues #271 and #274.)