replace custom iteration with keyring built-in function

client/keys/add.go

@@ -338,30 +338,15 @@ func printCreate(cmd *cobra.Command, info keyring.Info, showMnemonic bool, mnemo
 }
 
 func verifyMultisigTarget(kb keyring.Keyring, multisigKeys []string, newkey string) error {
- kl, err := kb.List()
- if err != nil {
- return err
- }
-
- kmap := make(map[string]bool)
- for i := 0; i < len(kl); i++ {
- kmap[kl[i].GetName()] = true
- }
-
- if _, ok := kmap[newkey]; ok {
+ if _, err := kb.Key(newkey); err == nil {
  return errors.New("you cannot specify a new key as one of the names of the keys that make up a multisig")
  }
 
- cnt := 0
  for _, k := range multisigKeys {
- if _, ok := kmap[k]; ok {
- cnt++
+ if _, err := kb.Key(k); err != nil {
+ return errors.New("part of the multisig target key does not exist")
  }
  }
 
- if cnt != len(multisigKeys) {
- return errors.New("part of the multisig target key does not exist")
- }
-
  return nil
 }