fix musl compilation by casting pthread_self()

35 jobs for !9250 with musl in 47 seconds (queued for 3 seconds)
latest detached
Status Job ID Name Coverage
  Sanity
passed #7553400
sanity

00:00:47

 
  Container
manual #7553403
aarch64 manual
arm_build
manual #7553404
manual
arm_test-base
manual #7553405
windows shell 1809 mesa manual
windows_build_vs2019
manual #7553401
manual
x86_build-base
manual #7553402
manual
x86_test-base
 
  Container 2
created #7553413
android_build
created #7553416
arm64_test
created #7553417
armhf_test
created #7553410
i386_build
created #7553406
kernel+rootfs_amd64
created #7553407
aarch64
kernel+rootfs_arm64
created #7553408
aarch64
kernel+rootfs_armhf
created #7553411
ppc64el_build
created #7553412
s390x_build
created #7553409
x86_build
created #7553414
x86_test-gl
created #7553415
x86_test-vk
 
  Meson X86 64
created #7553423
meson-clang
created #7553424
meson-clover
created #7553420
meson-clover-testing
created #7553421
gstreamer
meson-gallium
created #7553422
meson-release
created #7553418
meson-testing
created #7553419
meson-testing-asan
created #7553425
meson-vulkan
 
  Build Misc
created #7553426
meson-android
created #7553428
aarch64
meson-arm64
created #7553429
aarch64
meson-arm64-asan
created #7553430
aarch64
meson-arm64-build-test
created #7553427
aarch64
meson-armhf
created #7553431
meson-i386
created #7553434
meson-mingw32-x86_64
created #7553433
kvm
meson-ppc64el
created #7553432
kvm
meson-s390x