get_tx_info: fix types

gui/kivy/uix/dialogs/tx_dialog.py

@@ -107,7 +107,8 @@ class TxDialog(Factory.Popup):
 
     def update(self):
         format_amount = self.app.format_amount_and_units
-        self.tx_hash, self.status_str, self.description, self.can_broadcast, self.can_rbf, amount, fee, height, conf, timestamp, exp_n = self.wallet.get_tx_info(self.tx)
+        tx_hash, self.status_str, self.description, self.can_broadcast, self.can_rbf, amount, fee, height, conf, timestamp, exp_n = self.wallet.get_tx_info(self.tx)
+        self.tx_hash = tx_hash or ''
         if timestamp:
             self.date_str = datetime.fromtimestamp(timestamp).isoformat(' ')[:-3]
         elif exp_n:

gui/qt/transaction_dialog.py

@@ -190,7 +190,7 @@ class TxDialog(QDialog, MessageBoxMixin):
         else:
             self.sign_button.hide()
 
-        self.tx_hash_e.setText(tx_hash)
+        self.tx_hash_e.setText(tx_hash or _('Unknown'))
         if desc is None:
             self.tx_desc.hide()
         else:

lib/wallet.py

@@ -606,7 +606,7 @@ class Abstract_Wallet(PrintError):
         exp_n = None
         can_broadcast = False
         can_bump = False
-        label = None
+        label = ''
         height = conf = timestamp = None
         if tx.is_complete():
             tx_hash = tx.hash()
@@ -633,7 +633,7 @@ class Abstract_Wallet(PrintError):
         else:
             s, r = tx.signature_count()
             status = _("Unsigned") if s == 0 else _('Partially signed') + ' (%d/%d)'%(s,r)
-            tx_hash = _('Unknown')
+            tx_hash = None
 
         if is_relevant:
             if is_mine: