gl: libs: glib might not define G_HAVE_ISO_VARARGS

This will fix the compiler warning
"G_HAVE_ISO_VARARGS" is not defined, evaluates to 0 [-Wundef]
3 jobs for compiler-warning in 3 minutes and 32 seconds (queued for 3 seconds)
Status Name Job ID Coverage
  Manifest
passed manifest #48067

00:00:25

 
  Build
passed build android arm64 api28 #48069

00:03:07

passed build fedora x86_64 #48068

00:02:18