Merge pull request 'fixed currency validation logic' (#89) from currency-88 into main

Reviewed-on: #89

api/server/interface/api/srequest/payment_value_objects.go

@@ -86,10 +86,10 @@ func (p *CurrencyPair) Validate() error {
 	if p == nil {
 		return merrors.InvalidArgument("currency pair is required", "currncy_pair")
 	}
-	if err := ValidateCurrency(p.Base, nil); err != nil {
+	if err := ValidateCurrency(p.Base, &AssetResolverStub{}); err != nil {
 		return merrors.InvalidArgument("invalid base currency in pair: "+err.Error(), "currency_pair.base")
 	}
-	if err := ValidateCurrency(p.Quote, nil); err != nil {
+	if err := ValidateCurrency(p.Quote, &AssetResolverStub{}); err != nil {
 		return merrors.InvalidArgument("invalid quote currency in pair: "+err.Error(), "currency_pair.quote")
 	}
 	return nil