Assure that no unencrypted messages are sent while using `--ox`.

main.go

@@ -264,6 +264,7 @@ func main() {
 		if *flagOx {
 			re.OxKeyRing, err = oxGetPublicKeyRing(client, r)
 			if err != nil {
+				re.OxKeyRing = nil
 				fmt.Println("Couldn't receive key for:", r)
 			}
 		}
@@ -507,7 +508,10 @@ func main() {
 				scanner.Scan()
 				message = scanner.Text()
 				for _, recipient := range recipients {
-					if *flagOx && recipient.OxKeyRing != nil {
+					if *flagOx {
+						if recipient.OxKeyRing == nil {
+							continue
+						}
 						oxMessage, err := oxEncrypt(client, oxPrivKey,
 							recipient.Jid, recipient.OxKeyRing, message)
 						if err != nil {
@@ -537,7 +541,10 @@ func main() {
 					_, err = client.Send(xmpp.Chat{Remote: recipient.Jid,
 						Type: "chat", Ooburl: message, Text: message})
 				} else {
-					if *flagOx && recipient.OxKeyRing != nil {
+					if *flagOx {
+						if recipient.OxKeyRing == nil {
+							continue
+						}
 						oxMessage, err := oxEncrypt(client, oxPrivKey,
 							recipient.Jid, recipient.OxKeyRing, message)
 						if err != nil {