clover: Initialize command_queue member _props.

Fix defect reported by Coverity Scan.

Uninitialized scalar variable (UNINIT)
uninit_use: Using uninitialized value this->_props.
    _props |= properties[i + 1];

Fixes: e42a7fa0 ("clover: add support command queue properties")
Signed-off-by: Vinson Lee <vlee@freedesktop.org>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Karol Herbst <kherbst@redhat.com>
Part-of: <!7701>
36 jobs for !7701 with fix-cid-1469257 in 5 minutes and 55 seconds (queued for 4 seconds)
detached
Status Job ID Name Coverage
  Container
passed #5734222
aarch64
arm_build

00:00:24

passed #5734223
arm_test-base

00:00:16

passed #5734224
git_archive

00:00:18

passed #5734219
x86_build-base

00:00:16

passed #5734221
x86_build_old

00:00:17

passed #5734220
x86_test-base

00:00:21

 
  Container 2
passed #5734232
android_build

00:00:22

passed #5734235
arm64_test

00:00:14

passed #5734229
i386_build

00:00:23

passed #5734225
kernel+rootfs_amd64

00:00:29

passed #5734226
aarch64
kernel+rootfs_arm64

00:00:47

passed #5734227
aarch64
kernel+rootfs_armhf

00:00:22

passed #5734230
ppc64el_build

00:00:20

passed #5734231
s390x_build

00:00:23

passed #5734228
x86_build

00:00:21

passed #5734233
x86_test-gl

00:00:12

passed #5734234
x86_test-vk

00:00:14

 
  Sanity
passed #5734236
check mr

00:00:21

 
  Meson X86 64
passed #5734242
meson-clang

00:03:33

passed #5734241
meson-classic

00:02:28

passed #5734243
meson-clover

00:02:52

passed #5734238
meson-clover-testing

00:02:16

passed #5734239
meson-gallium

00:03:47

passed #5734240
meson-release

00:02:16

passed #5734237
meson-testing

00:02:24

passed #5734244
meson-vulkan

00:03:29

 
  Scons
passed #5734245
scons-win64

00:04:00

 
  Meson Misc
passed #5734246
meson-android

00:00:50

passed #5734248
aarch64
meson-arm64

00:01:30

passed #5734249
aarch64
meson-arm64-build-test

00:01:27

passed #5734247
aarch64
meson-armhf

00:02:25

passed #5734250
meson-i386

00:01:46

passed #5734253
meson-mingw32-x86_64

00:01:24

passed #5734252
kvm
meson-ppc64el

00:03:39

passed #5734251
kvm
meson-s390x

00:05:00

 
  Llvmpipe
passed #5734254
piglit-cl

00:02:33