spirv_to_dxil: Fix missing-prototypes build error.

../src/microsoft/spirv_to_dxil/spirv_to_dxil.c: At top level:
../src/microsoft/spirv_to_dxil/spirv_to_dxil.c:200:1: error: no previous prototype for ‘spirv_to_dxil_get_version’ [-Werror=missing-prototypes]
  200 | spirv_to_dxil_get_version()
      | ^~~~~~~~~~~~~~~~~~~~~~~~~

Fixes: 92b0cf8e ("spirv_to_dxil: expose version number")
Signed-off-by: Vinson Lee <vlee@freedesktop.org>
Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Part-of: <!12264>
38 jobs for !12264 with fix-spirv-missing-prototypes in 13 minutes and 16 seconds (queued for 14 seconds)
latest detached
Status Name Job ID Coverage
  Sanity
passed sanity #12592107

00:00:09

 
  Container
passed debian/arm_build #12592110
aarch64

00:00:30

passed debian/x86_build-base #12592108

00:00:27

passed debian/x86_test-base #12592109

00:00:29

passed fedora/x86_build #12592111

00:00:27

passed windows_build_vs2019 #12592112
windows shell 1809 mesa

00:00:12

 
  Container 2
passed debian/android_build #12592117

00:00:31

passed debian/i386_build #12592114

00:00:29

passed debian/ppc64el_build #12592115

00:00:28

passed debian/s390x_build #12592116

00:00:31

passed debian/x86_build #12592113

00:00:29

passed debian/x86_test-gl #12592118

00:00:30

passed debian/x86_test-vk #12592119

00:00:24

passed kernel+rootfs_amd64 #12592120

00:00:27

passed kernel+rootfs_arm64 #12592121
aarch64

00:00:14

passed kernel+rootfs_armhf #12592122
aarch64

00:00:13

 
  Build X86 64
passed debian-clang #12592129

00:03:43

passed debian-clover #12592130

00:00:58

passed debian-clover-testing #12592125

00:01:57

passed debian-gallium #12592126

00:05:38

passed debian-release #12592127

00:03:12

passed debian-testing #12592123

00:02:03

passed debian-testing-asan #12592124

00:02:45

passed debian-vulkan #12592131

00:02:10

passed fedora-release #12592128

00:01:40

 
  Build Misc
passed debian-android #12592133

00:00:31

passed debian-arm64 #12592135
aarch64

00:02:32

passed debian-arm64-asan #12592136
aarch64

00:02:55

passed debian-arm64-build-test #12592137
aarch64

00:01:21

passed debian-armhf #12592134
aarch64

00:01:35

passed debian/arm_test #12592132

00:00:25

passed debian-i386 #12592139

00:02:54

passed debian-mingw32-x86_64 #12592140

00:01:19

passed windows-vs2019 #12592138
windows docker 1809 mesa

00:05:12

 
  Software Renderer
passed softpipe-asan-gles31 #12592143

00:02:52

passed softpipe-deqp 1/2 #12592141

00:08:22

passed softpipe-deqp 2/2 #12592142

00:09:46

 
  Layered Backends
passed test-d3d12-windows #12592144
windows docker 1809 mesa

00:03:26