Fix invalid debug assertion.
The current `debug_assert_eq` is clearly wrong as the code handles zero
response blocks. What should have been expressed is that we expect 0 or
1 response blocks.
@@ -667,7 +667,7 @@ impl<B: BlockT> ChainSync<B> {
peer.state = PeerSyncState::Available;
// We only request one justification at a time
- debug_assert_eq!(1, response.blocks.len());
+ debug_assert!(response.blocks.len() < 2);
if let Some(block) = response.blocks.into_iter().next() {
if hash != block.hash {
