ostree-fetcher: add max_size argument to change _ostree_metalink_request_sync

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>

src/libostree/ostree-repo-pull.c

@@ -265,6 +265,7 @@ fetch_uri_contents_membuf_sync (OtPullData    *pull_data,
                                               out_contents,
                                               pull_data->loop,
                                               pull_data,
+                                              OSTREE_MAX_METADATA_SIZE,
                                               cancellable,
                                               error);
   pull_data->fetching_sync_uri = NULL;