fix consensus head bug

iterated on the vec

web3_proxy/src/rpcs/consensus.rs

@@ -252,7 +252,7 @@ impl ConsensusFinder {
 
         // loop over all the rpc heads (grouped by tier) and their parents to find consensus
         // TODO: i'm sure theres a lot of shortcuts that could be taken, but this is simplest to implement
-        for (rpc, rpc_head) in self.rpc_heads.iter() {
+        for (rpc, rpc_head) in rpc_heads_by_tier.into_iter() {
             if current_tier != rpc.tier {
                 // we finished processing a tier. check for primary results
                 if let Some(consensus) = self.count_votes(&primary_votes, web3_rpcs) {