new fields in eth.receipt_cids to index contract addresses seen in

logs; handle null dst/contract addrs in trxs/rcts

pkg/super_node/shared/functions.go

@@ -20,6 +20,7 @@ import (
 	"bytes"
 
 	"github.com/ethereum/go-ethereum/common"
+
 	"github.com/vulcanize/vulcanizedb/pkg/ipfs"
 )
 
@@ -53,10 +54,18 @@ func ListContainsGap(gapList []Gap, gap Gap) bool {
 	return false
 }
 
-// HandleNullAddr converts a nil pointer to an address to a zero-valued hex address string
-func HandleNullAddr(to *common.Address) string {
+// HandleNullAddrPointer will return an emtpy string for a nil address pointer
+func HandleNullAddrPointer(to *common.Address) string {
 	if to == nil {
-		return "0x0000000000000000000000000000000000000000000000000000000000000000"
+		return ""
+	}
+	return to.Hex()
+}
+
+// HandleNullAddr will return an empty string for a a null address
+func HandleNullAddr(to common.Address) string {
+	if to.Hex() == "0x0000000000000000000000000000000000000000" {
+		return ""
 	}
 	return to.Hex()
 }