initialize, rather than invalidating, new http buffers

when building without ISC_BUFFER_USEINLINE (which is the default on
Windows) an assertion failure could occur when setting up a new
isc_httpd_t object for the statistics channel.
80 jobs for !3888 with 2031-win32-fix in 45 seconds (queued for 7 seconds)
detached
Status Job ID Name Coverage
  Autoconf
passed #1043084
amd64 linux
autoreconf

00:00:17

 
  Precheck
passed #1043086
amd64 linux
clang-format

00:00:15

canceled #1043087
amd64 linux
coccinelle

00:00:36

passed #1043088
amd64 linux
danger

00:00:12

passed #1043085
amd64 linux
misc

00:00:15

canceled #1043089
amd64 linux
tarball-create

00:00:16

 
  Build
canceled #1043104
amd64 linux
clang:asan

00:00:22

canceled #1043108
amd64 linux
clang:buster:amd64

00:00:21

canceled #1043111
amd64 libvirt
clang:freebsd11:amd64

00:00:09

canceled #1043112
amd64 libvirt
clang:freebsd12:amd64

00:00:09

canceled #1043113
amd64 libvirt
clang:openbsd:amd64

00:00:07

canceled #1043106
amd64 linux
clang:tsan

00:00:21

canceled #1043090
amd64 linux
gcc:alpine3.12:amd64

00:00:15

canceled #1043103
amd64 linux
gcc:asan

00:00:13

canceled #1043095
amd64 linux
gcc:buster:amd64

00:00:17

canceled #1043091
amd64 linux
gcc:centos6:amd64

00:00:12

canceled #1043092
amd64 linux
gcc:centos7:amd64

00:00:20

canceled #1043093
amd64 linux
gcc:centos8:amd64

00:00:19

canceled #1043102
amd64 linux
gcc:focal:amd64

00:00:13

canceled #1043107
amd64 linux
gcc:mutexatomics

00:00:21

canceled #1043097
amd64 linux
gcc:out-of-tree

00:00:16

canceled #1043096
amd64 linux
gcc:sid:amd64

00:00:16

canceled #1043098
arm64 linux
gcc:sid:arm64

canceled #1043099
i386 linux
gcc:sid:i386

00:00:15

canceled #1043109
amd64 linux
gcc:softhsm2.4

00:00:21

canceled #1043110
amd64 linux
gcc:softhsm2.6

00:00:12

canceled #1043094
amd64 linux
gcc:stretch:amd64

00:00:18

canceled #1043105
amd64 linux
gcc:tsan

00:00:22

canceled #1043100
amd64 linux
gcc:tumbleweed:amd64

00:00:14

canceled #1043101
amd64 linux
gcc:xenial:amd64

00:00:14

canceled #1043114
amd64 windows
msvc:windows:amd64

00:00:39

 
  Unit
canceled #1043128
amd64 linux
unit:clang:asan

canceled #1043132
amd64 linux
unit:clang:buster:amd64

canceled #1043135
amd64 libvirt
unit:clang:freebsd11:amd64

canceled #1043136
amd64 libvirt
unit:clang:freebsd12:amd64

canceled #1043130
amd64 linux allowed to fail
unit:clang:tsan

canceled #1043115
amd64 linux
unit:gcc:alpine3.12:amd64

canceled #1043127
amd64 linux
unit:gcc:asan

canceled #1043120
amd64 linux
unit:gcc:buster:amd64

canceled #1043116
amd64 linux
unit:gcc:centos6:amd64

canceled #1043117
amd64 linux
unit:gcc:centos7:amd64

canceled #1043118
amd64 linux
unit:gcc:centos8:amd64

canceled #1043126
amd64 linux
unit:gcc:focal:amd64

canceled #1043131
amd64 linux
unit:gcc:mutexatomics

canceled #1043121
amd64 linux
unit:gcc:sid:amd64

canceled #1043122
arm64 linux
unit:gcc:sid:arm64

canceled #1043123
i386 linux
unit:gcc:sid:i386

canceled #1043133
amd64 linux
unit:gcc:softhsm2.4

canceled #1043134
amd64 linux
unit:gcc:softhsm2.6

canceled #1043119
amd64 linux
unit:gcc:stretch:amd64

canceled #1043129
amd64 linux allowed to fail
unit:gcc:tsan

canceled #1043124
amd64 linux
unit:gcc:tumbleweed:amd64

canceled #1043125
amd64 linux
unit:gcc:xenial:amd64

 
  System
canceled #1043150
amd64 linux
system:clang:asan

canceled #1043154
amd64 linux
system:clang:buster:amd64

canceled #1043157
amd64 libvirt
system:clang:freebsd11:amd64

canceled #1043158
amd64 libvirt
system:clang:freebsd12:amd64

canceled #1043152
amd64 linux allowed to fail
system:clang:tsan

canceled #1043137
amd64 linux
system:gcc:alpine3.12:amd64

canceled #1043149
amd64 linux
system:gcc:asan

canceled #1043142
amd64 linux
system:gcc:buster:amd64

canceled #1043138
amd64 linux
system:gcc:centos6:amd64

canceled #1043139
amd64 linux
system:gcc:centos7:amd64

canceled #1043140
amd64 linux
system:gcc:centos8:amd64

canceled #1043148
amd64 linux
system:gcc:focal:amd64

canceled #1043153
amd64 linux
system:gcc:mutexatomics

canceled #1043143
amd64 linux
system:gcc:sid:amd64

canceled #1043144
arm64 linux
system:gcc:sid:arm64

canceled #1043145
i386 linux
system:gcc:sid:i386

canceled #1043155
amd64 linux
system:gcc:softhsm2.4

canceled #1043156
amd64 linux
system:gcc:softhsm2.6

canceled #1043141
amd64 linux
system:gcc:stretch:amd64

canceled #1043151
amd64 linux allowed to fail
system:gcc:tsan

canceled #1043146
amd64 linux
system:gcc:tumbleweed:amd64

canceled #1043147
amd64 linux
system:gcc:xenial:amd64

 
  Docs
canceled #1043159
amd64 linux
docs

00:00:11

 
  Postcheck
canceled #1043163
amd64 linux
cppcheck

00:00:08

canceled #1043160
amd64 linux
flake8

00:00:10

canceled #1043161
amd64 linux
pylint

00:00:09

canceled #1043162
amd64 linux
scan-build

00:00:09