lib: Fix compiler warning from previous patch

I had this in a `fixup!` I thought.

Closes: #414
Approved by: giuseppe

diff --git a/src/libostree/ostree-bootconfig-parser.c b/src/libostree/ostree-bootconfig-parser.c
index 6ca4df1d928b3913f18dff4618686dfedc71a1fb..f7728e42060cb7bd9f7771129cf8b2dd678fa463 100644 (file)
--- a/src/libostree/ostree-bootconfig-parser.c
+++ b/src/libostree/ostree-bootconfig-parser.c
@@ -244,7 +244,7 @@ static void
 ostree_bootconfig_parser_init (OstreeBootconfigParser *self)
 {
   self->options = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
-  self->lines = g_ptr_array_new_with_free_func (g_variant_unref);
+  self->lines = g_ptr_array_new_with_free_func ((GDestroyNotify)g_variant_unref);
 }
 
 void