[libsecret] meson: Pass correct header to generate_gir to fix broken vapi

[Rico Tzschichholz <ricotz src gnome org>]

commit 50c1d717ca80341c8e1bb2bffb7c74bc3c1e6a77
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Fri Jan 25 22:08:37 2019 +0100

    meson: Pass correct header to generate_gir to fix broken vapi

 libsecret/meson.build | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/libsecret/meson.build b/libsecret/meson.build
index 5cc2456..85c5096 100644
--- a/libsecret/meson.build
+++ b/libsecret/meson.build
@@ -108,6 +108,7 @@ libsecret_gir = gnome.generate_gir(libsecret,
   nsversion: api_version_major,
   export_packages: 'libsecret-@0@'.format(api_version_major),
   includes: [ 'GObject-2.0', 'Gio-2.0' ],
+  header: 'libsecret/secret.h',
   extra_args: [ '-D SECRET_COMPILATION'],
   install: true,
 )