vk-overlay-layer: use `%m` instead of `strerror(errno)`

Signed-off-by: Eric Engestrom <eric@engestrom.ch>
40 jobs for !3864 with strerror-errno in 23 minutes and 35 seconds (queued for 3 seconds)
detached
Status Job ID Name Coverage
  Container
passed #1663126
aarch64
arm_build

00:00:22

passed #1663127
aarch64
arm_test

00:00:22

passed #1663123
x86_build

00:00:22

passed #1663125
x86_build_old

00:00:17

passed #1663124
x86_test-gl

00:00:22

 
  Build
passed #1663131
aarch64
meson-arm64

00:03:43

passed #1663130
aarch64
meson-armhf

00:02:39

passed #1663132
meson-clang

00:07:41

passed #1663135
meson-clover

00:03:16

passed #1663136
meson-clover-old-llvm

00:05:21

passed #1663138
meson-i386

00:03:41

passed #1663129
meson-main

00:07:25

passed #1663141
meson-mingw32-x86_64

00:03:58

passed #1663140
gstreamer
meson-ppc64el

00:04:20

passed #1663139
gstreamer
meson-s390x

00:04:18

passed #1663128
meson-testing

00:05:15

passed #1663137
meson-vulkan

00:04:28

passed #1663142
scons

00:05:40

passed #1663143
scons-old-llvm

00:02:15

passed #1663133
scons-swr

00:04:56

passed #1663134
scons-win64

00:05:58

 
  Test
passed #1663162
db410c
arm64_a306_gles2

00:06:33

passed #1663159
mesa-cheza
arm64_a630_gles2

00:04:07

passed #1663161
mesa-cheza
arm64_a630_gles3

00:10:05

passed #1663160
mesa-cheza
arm64_a630_gles31

00:07:56

passed #1663147
lava-meson-gxl-s905x-libretech-cc
lima-mali450-test:arm64

00:08:36

passed #1663144
lava-sun50i-h6-pine-h64
panfrost-t720-test:arm64

00:08:22

passed #1663145
lava-rk3288-veyron-jaq
panfrost-t760-test:armhf

00:05:54

passed #1663146
lava-rk3399-gru-kevin
panfrost-t860-test:arm64

00:06:20

passed #1663149
piglit-glslparser

00:04:32

passed #1663148
piglit-quick_gl

00:09:38

passed #1663150
piglit-quick_shader

00:06:02

passed #1663151
test-llvmpipe-gles2

00:03:07

passed #1663152
test-softpipe-gles2

00:01:40

passed #1663155
test-softpipe-gles31 1/4

00:02:50

passed #1663153
test-softpipe-gles3 1/2

00:03:47

passed #1663156
test-softpipe-gles31 2/4

00:04:03

passed #1663157
test-softpipe-gles31 3/4

00:04:52

passed #1663158
test-softpipe-gles31 4/4

00:03:17

passed #1663154
test-softpipe-gles3 2/2

00:03:58