[epiphany] Fix gvdb_table_write_contents_async()

[Michael Catanzaro <mcatanzaro src gnome org>]

commit de54f9b1ad9784b07150eeffa125193d583b3b1c
Author: Michael Catanzaro <mcatanzaro igalia com>
Date:   Thu Jun 27 16:51:57 2019 -0500

    Fix gvdb_table_write_contents_async()
    
    It's always deleting the bookmarks file because str has already been
    freed. This worked when I first wrote the code, but I broke it during
    late stages of code review. Oops.
    
    Fixes #837

 lib/contrib/gvdb/gvdb-builder.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
---
diff --git a/lib/contrib/gvdb/gvdb-builder.c b/lib/contrib/gvdb/gvdb-builder.c
index 70c0ac1cf..86377da91 100644
--- a/lib/contrib/gvdb/gvdb-builder.c
+++ b/lib/contrib/gvdb/gvdb-builder.c
@@ -602,7 +602,9 @@ gvdb_table_write_contents_async (GHashTable          *table,
   g_task_set_task_data (task, data, (GDestroyNotify)write_contents_data_free);
   g_task_set_source_tag (task, gvdb_table_write_contents_async);
 
-  g_file_replace_contents_async (file, str->str, str->len,
+  g_file_replace_contents_async (file,
+                                 g_bytes_get_data (bytes, NULL),
+                                 g_bytes_get_size (bytes),
                                  NULL, FALSE,
                                  G_FILE_CREATE_PRIVATE | G_FILE_CREATE_REPLACE_DESTINATION,
                                  cancellable, replace_contents_cb, g_steal_pointer (&task));