[vte] build: Don't warn on C99 designated initialisers

[Christian Persch <chpe src gnome org>]

commit cca1224968245bd772cd3404342e36bbde265458
Author: Christian Persch <chpe src gnome org>
Date:   Wed Feb 24 20:22:10 2021 +0100

    build: Don't warn on C99 designated initialisers

 meson.build | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/meson.build b/meson.build
index 8d2b8b3e..866d87f2 100644
--- a/meson.build
+++ b/meson.build
@@ -319,6 +319,7 @@ compiler_flags_common = [
   '-Wmissing-include-dirs',
   '-Wmissing-noreturn',
   '-Wno-address-of-packed-member',
+  '-Wno-c99-designator',
   '-Wno-missing-field-initializers',
   '-Wno-packed',
   '-Wno-switch-enum',