internal/ethapi: fixes #2648, returns logsBloom for pending block

internal/ethapi/api.go

@@ -451,7 +451,7 @@ func (s *PublicBlockChainAPI) GetBlockByNumber(ctx context.Context, blockNr rpc.
 		response, err := s.rpcOutputBlock(block, true, fullTx)
 		if err == nil && blockNr == rpc.PendingBlockNumber {
 			// Pending blocks need to nil out a few fields
-			for _, field := range []string{"hash", "nonce", "logsBloom", "miner"} {
+			for _, field := range []string{"hash", "nonce", "miner"} {
 				response[field] = nil
 			}
 		}