do not update bitcoin balance if getting address balance fails

providers/bitcoin/providerImpl.go

@@ -2,7 +2,6 @@ package bitcoin
 
 import (
 	"fmt"
-	"log"
 	"os"
 	"sync"
 )
@@ -48,20 +47,21 @@ func (p *Provider) GetBalances() ([]int, []string, error) {
 	ynabAccountIDs := make([]string, 0)
 	var satoshiBalance int
 	wg := sync.WaitGroup{}
+	var goErr *error
 
 	for _, bitcoinAddress := range p.bitcoinAddresses {
 		wg.Add(1)
-		go func() {
+		go func(goErr *error) {
 			defer wg.Done()
 			addressResponse, err := p.client.getAddress(bitcoinAddress)
 			if err != nil {
-				log.Printf("failed to get bitcoin address '%s': %v", bitcoinAddress, err)
+				err := fmt.Errorf("failed to get bitcoin address '%s': %v", bitcoinAddress, err)
+				goErr = &err
 				return
 			}
 			satoshiBalance += addressResponse.ChainStats.FundedTxoSum - addressResponse.ChainStats.SpentTxoSum
-		}()
+		}(goErr)
 	}
-
 	wg.Wait()
 
 	fiatBalance, err := p.client.convertBTCToCAD(satoshiBalance)