[PATCH] tests/migration: Restrict initrd-stress.img to Linux

["Philippe Mathieu-Daudé" <philmd@linaro.org>]

Trying to build initrd-stress.img on Darwin we get:

  $ ninja tests/migration/initrd-stress.img
  Compiling C object tests/migration/stress.p/stress.c.o
  FAILED: tests/migration/stress.p/stress.c.o
  ../tests/migration/stress.c:24:10: fatal error: 'linux/random.h' file not found
  #include <linux/random.h>
           ^~~~~~~~~~~~~~~~
  1 error generated.
  ninja: build stopped: subcommand failed.

Per the include path, this test is Linux specific.
Since this is the single binary built in this directory,
restrict the whole meson.build to Linux.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 tests/migration/meson.build | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tests/migration/meson.build b/tests/migration/meson.build
index ac71f13290..56523e0785 100644
--- a/tests/migration/meson.build
+++ b/tests/migration/meson.build
@@ -1,3 +1,7 @@
+if targetos != 'linux'
+   subdir_done()
+endif
+
 sysprof = dependency('sysprof-capture-4', required: false)
 glib_static = dependency('glib-2.0', version: glib_req_ver, required: false,
                          method: 'pkg-config', static: true)
-- 
2.38.1