[gobject-introspection] repository: Fix g_irepository_get_c_prefix()

[Colin Walters <walters src gnome org>]

commit e8b336cc0747b528263ec809d142f4803dcbdf35
Author: Colin Walters <walters verbum org>
Date:   Wed Sep 21 13:13:45 2011 -0400

    repository: Fix g_irepository_get_c_prefix()
    
    It was returning the wrong data.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=659749

 girepository/girepository.c   |    2 +-
 tests/repository/gitestrepo.c |    5 +++++
 2 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/girepository/girepository.c b/girepository/girepository.c
index cc81107..b5cd4c7 100644
--- a/girepository/girepository.c
+++ b/girepository/girepository.c
@@ -929,7 +929,7 @@ g_irepository_get_c_prefix (GIRepository *repository,
   g_return_val_if_fail (typelib != NULL, NULL);
 
   header = (Header *) typelib->data;
-  if (header->shared_library)
+  if (header->c_prefix)
     return g_typelib_get_string (typelib, header->c_prefix);
   else
     return NULL;
diff --git a/tests/repository/gitestrepo.c b/tests/repository/gitestrepo.c
index cdaeb4c..05ea5d9 100644
--- a/tests/repository/gitestrepo.c
+++ b/tests/repository/gitestrepo.c
@@ -46,6 +46,7 @@ main(int argc, char **argv)
   GIBaseInfo *siginfo;
   GIEnumInfo *errorinfo;
   GType gtype;
+  const char *prefix;
 
   g_type_init ();
 
@@ -55,6 +56,10 @@ main(int argc, char **argv)
   if (!ret)
     g_error ("%s", error->message);
 
+  prefix = g_irepository_get_c_prefix (repo, "Gio");
+  g_assert (prefix != NULL);
+  g_assert_cmpstr (prefix, ==, "G");
+
   info = g_irepository_find_by_name (repo, "Gio", "Cancellable");
   g_assert (info != NULL);
   g_assert (g_base_info_get_type (info) == GI_INFO_TYPE_OBJECT);