restore default labels

lib/wallet.py

@@ -880,8 +880,21 @@ class Abstract_Wallet(PrintError):
 
     def get_label(self, tx_hash):
         label = self.labels.get(tx_hash, '')
+        if label is '':
+            label = self.get_default_label(tx_hash)
         return label
 
+    def get_default_label(self, tx_hash):
+        if self.txi.get(tx_hash) == {}:
+            d = self.txo.get(tx_hash, {})
+            labels = []
+            for addr in d.keys():
+                label = self.labels.get(addr)
+                if label:
+                    labels.append(label)
+            return ', '.join(labels)
+        return ''
+
     def fee_per_kb(self, config):
         b = config.get('dynamic_fees')
         f = config.get('fee_factor', 50)