chore(sample-docs): unify error handling with panic(err).

_code-samples/send-a-memo/go/rpc/main.go

@@ -16,14 +16,12 @@ import (
 func main() {
     w, err := wallet.FromSeed("sEdSMVV4dJ1JbdBxmakRR4Puu3XVZz2", "") 
     if err != nil {
-        fmt.Println(err)
-        return
+        panic(err)
     }
 
     receiverWallet, err := wallet.FromSeed("sEd7d8Ci9nevdLCeUMctF3uGXp9WQqJ", "")
     if err != nil {
-        fmt.Println(err)
-        return
+        panic(err)
     }
 
     cfg, err := rpc.NewClientConfig(
@@ -42,8 +40,7 @@ func main() {
         fmt.Println("Funding wallet...")
         err = client.FundWallet(&w)
         if err != nil {
-            fmt.Println(err)
-            return
+            panic(err)
         }
         fmt.Println("Wallet funded")
     }
@@ -54,14 +51,12 @@ func main() {
 
     amount, err := currency.XrpToDrops("1")
     if err != nil {
-        fmt.Println(err)
-        return
+        panic(err)
     }
 
     amountUint, err := strconv.ParseUint(amount, 10, 64)
     if err != nil {
-        fmt.Println(err)
-        return
+        panic(err)
     }
 
     fmt.Println("Sending payment...")
@@ -93,20 +88,17 @@ func main() {
 
     err = client.Autofill(&flatTx)
     if err != nil {
-        fmt.Println(err)
-        return
+        panic(err)
     }
 
     txBlob, _, err := w.Sign(flatTx)
     if err != nil {
-        fmt.Println(err)
-        return
+        panic(err)
     }
 
     response, err := client.SubmitTxBlobAndWait(txBlob, true)
     if err != nil {
-        fmt.Println(err)
-        return
+        panic(err)
     }
 
     fmt.Println("Payment submitted")