Last unwrapped errors

These where missed in local lints but when a full lint was run these
popped up.

indexer/db/db.go

@@ -658,7 +658,7 @@ WHERE address = $1
 func (d *Database) GetAirdrop(address common.Address) (*Airdrop, error) {
 	row := d.db.QueryRow(getAirdropQuery, strings.ToLower(address.String()))
 	if row.Err() != nil {
-		return nil, fmt.Errorf("error getting airdrop: %v", row.Err())
+		return nil, fmt.Errorf("error getting airdrop: %w", row.Err())
 	}
 
 	airdrop := new(Airdrop)
@@ -677,7 +677,7 @@ func (d *Database) GetAirdrop(address common.Address) (*Airdrop, error) {
 		return nil, nil
 	}
 	if err != nil {
-		return nil, fmt.Errorf("error scanning airdrop: %v", err)
+		return nil, fmt.Errorf("error scanning airdrop: %w", err)
 	}
 	return airdrop, nil
 }

proxyd/errors.go

@@ -3,5 +3,5 @@ package proxyd
 import "fmt"
 
 func wrapErr(err error, msg string) error {
-	return fmt.Errorf("%s %v", msg, err)
+	return fmt.Errorf("%s %w", msg, err)
 }