regression tests: Properly handle adnshost et al exit status

[adns] / regress / case-srvha.sys

./adnshost default -A4
-t srv _srv._tcp.test.iwj.relativity.greenend.org.uk. _jabber._tcp.jabber.org _sip._udp.voip.net.cam.ac.uk.
 start 1144348939.753711
 socket domain=AF_INET type=SOCK_DGRAM
 socket=6
 +0.000080
 fcntl fd=6 cmd=F_GETFL
 fcntl=~O_NONBLOCK&...
 +0.000050
 fcntl fd=6 cmd=F_SETFL O_NONBLOCK|...
 fcntl=OK
 +0.000042
 sendto fd=6 addr=172.18.45.6:53
     311f0100 00010000 00000000 045f7372 76045f74 63700474 65737403 69776a0a
     72656c61 74697669 74790867 7265656e 656e6403 6f726702 756b0000 210001.
 sendto=63
 +0.000363
 sendto fd=6 addr=172.18.45.6:53
     31200100 00010000 00000000 075f6a61 62626572 045f7463 70066a61 62626572
     036f7267 00002100 01.
 sendto=41
 +0.000218
 sendto fd=6 addr=172.18.45.6:53
     31210100 00010000 00000000 045f7369 70045f75 64700476 6f697003 6e657403
     63616d02 61630275 6b000021 0001.
 sendto=46
 +0.000211
 select max=7 rfds=[6] wfds=[] efds=[] to=1.999208
 select=1 rfds=[6] wfds=[] efds=[]
 +0.005339
 recvfrom fd=6 buflen=512
 recvfrom=OK addr=172.18.45.6:53
     311f8580 00010004 00020004 045f7372 76045f74 63700474 65737403 69776a0a
     72656c61 74697669 74790867 7265656e 656e6403 6f726702 756b0000 210001c0
     0c002100 01000000 0a002a00 1401904f b007616e 61727265 730a7265 6c617469
     76697479 08677265 656e656e 64036f72 6702756b 00c00c00 21000100 00000a00
     29001400 c84ee806 6e6f7277 61790a72 656c6174 69766974 79086772 65656e65
     6e64036f 72670275 6b00c00c 00210001 0000000a 002b0014 00644e84 086e7864
     6f6d6169 6e0a7265 6c617469 76697479 08677265 656e656e 64036f72 6702756b
     00c00c00 21000100 00000a00 2b000a00 42275208 64617665 6e616e74 0a72656c
     61746976 69747908 67726565 6e656e64 036f7267 02756b00 c0160002 00010000
     000a0006 036e7330 c01fc016 00020001 0000000a 0021086e 732d7370 6f6e6702
     34350331 37320231 3807696e 2d616464 72046172 70610007 616e6172 726573c0
     1f000100 01000151 800004ac 122d0206 6e6f7277 6179c01f 00010001 00015180
     0004ac12 2d280864 6176656e 616e74c0 1f000100 01000151 800004ac 122d06c1
     24000100 01000151 800004ac 122d06.
 +0.000561
 sendto fd=6 addr=172.18.45.6:53
     31230100 00010000 00000000 086e7864 6f6d6169 6e0a7265 6c617469 76697479
     08677265 656e656e 64036f72 6702756b 00000100 01.
 sendto=53
 +0.000465
 recvfrom fd=6 buflen=512
 recvfrom=OK addr=172.18.45.6:53
     31208180 00010001 00040005 075f6a61 62626572 045f7463 70066a61 62626572
     036f7267 00002100 01c00c00 21000100 0006a100 12001e00 1e149506 6a616262
     6572036f 726700c0 19000200 0100001b b9001103 6e733107 6a657265 6d696503
     636f6d00 c0190002 00010000 1bb90006 036e7332 c057c019 00020001 00001bb9
     000c036e 73310562 6c616872 c05fc019 00020001 00001bb9 0010026e 73076f62
     656c6973 6b036e65 7400c019 00010001 000000c5 0004d0f5 d462c053 00010001
     00004107 0004d0f5 d41dc070 00010001 00004107 0004d0f5 d41ec082 00010001
     00004109 00044051 6774c09a 00010001 00004109 00044761 e072.
 +0.000378
 recvfrom fd=6 buflen=512
 recvfrom=EAGAIN
 +0.000074
 select max=7 rfds=[6] wfds=[] efds=[] to=1.992972
 select=1 rfds=[6] wfds=[] efds=[]
 +0.000229
 recvfrom fd=6 buflen=512
 recvfrom=OK addr=172.18.45.6:53
     31218180 00010001 00070008 045f7369 70045f75 64700476 6f697003 6e657403
     63616d02 61630275 6b000021 0001c00c 00210001 00015129 001e000a 000113c4
     03736970 04766f69 70036e65 74036361 6d026163 02756b00 c01f0002 00010001
     5129000a 03633031 03637369 c01fc01f 00020001 00015129 0009036e 73320269
     63c023c0 1f000200 01000151 29000a04 646e7330 02636cc0 1fc01f00 02000100
     01512900 0b04646e 73300365 6e67c01f c01f0002 00010001 51290007 04646e73
     31c094c0 1f000200 01000151 29000f05 62697473 79036d69 74036564 7500c01f
     00020001 00015129 000f0863 68696d61 65726103 637378c0 1f037369 70c01600
     01000100 01512900 04836f08 aec06400 01000100 01512900 04836f0c 14c07a00
     01000100 00fd0f00 049bc605 03c08f00 01000100 00540900 0480e800 13c0a500
     01000100 01512900 0481a908 08c0bc00 01000100 00540900 0480e800 12c0cf00
     01000100 00024b00 04124800 03c0ea00 01000100 01512900 04836f08 2a.
 +0.000486
 recvfrom fd=6 buflen=512
 recvfrom=EAGAIN
 +0.000135
 select max=7 rfds=[6] wfds=[] efds=[] to=1.997672
 select=1 rfds=[6] wfds=[] efds=[]
 +0.003660
 recvfrom fd=6 buflen=512
 recvfrom=OK addr=172.18.45.6:53
     31238583 00010000 00010000 086e7864 6f6d6169 6e0a7265 6c617469 76697479
     08677265 656e656e 64036f72 6702756b 00000100 01c01500 06000100 01518000
     27036e73 30c0150a 686f7374 6d617374 6572c015 00000075 00001c20 00000e10
     00093a80 00015180.
 +0.000177
 recvfrom fd=6 buflen=512
 recvfrom=EAGAIN
 +0.000073
 close fd=6
 close=OK
 +0.006908
 exit 0