[gcab] trivial: Use the correct C-include when generating the vapi

[Richard Hughes <rhughes src gnome org>]

commit c8400e3bbcdb71b186238d5fc722a50cf6ad58bb
Author: Richard Hughes <richard hughsie com>
Date:   Mon Dec 18 09:38:51 2017 +0000

    trivial: Use the correct C-include when generating the vapi

 libgcab/meson.build |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/libgcab/meson.build b/libgcab/meson.build
index 659ff02..1649a9f 100644
--- a/libgcab/meson.build
+++ b/libgcab/meson.build
@@ -80,6 +80,7 @@ if get_option('introspection')
     nsversion : '1.0',
     namespace : 'GCab',
     symbol_prefix : 'gcab',
+    header : 'libgcab.h',
     identifier_prefix : 'GCab',
     export_packages : 'libgcab',
     dependencies : [