[PATCH] po/meson: make i18n module optional

[Anton Kochkov <anton.kochkov@proton.me>]

This is necessary for Muon build system compatibility and
prevents the following error:

meson.build:4:8: error module 'i18n' is unimplemented,
  If you would like to make your build files portable to muon,
  use `import('i18n', required: false)`,
  and then check the .found() method before use.
  4 |   i18n.gettext(meson.project_name(),
             ^
qemu/meson.build:3640:3: error in function subdir()
3640 |   subdir('po')
         ^

Signed-off-by: Anton Kochkov <anton.kochkov@proton.me>
---
 po/meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/po/meson.build b/po/meson.build
index a863f0575f..f7be95cf5f 100644
--- a/po/meson.build
+++ b/po/meson.build
@@ -1,4 +1,4 @@
-i18n = import('i18n')
+i18n = import('i18n', required: false)

 if find_program('xgettext', required: get_option('gettext')).found()
   i18n.gettext(meson.project_name(),
--
2.39.1