Resolved pylint warnings in address_dialogs

Author: g1itch

src/bitmessageqt/__init__.py

@@ -2475,7 +2475,7 @@ def click_pushButtonAddAddressBook(self, dialog=None):
         dialog.exec_()
         try:
             address, label = dialog.data
-        except AttributeError:
+        except (AttributeError, TypeError):
             return
 
         # First we must check to see if the address is already in the
@@ -2520,7 +2520,7 @@ def click_pushButtonAddSubscription(self):
         dialog.exec_()
         try:
             address, label = dialog.data
-        except AttributeError:
+        except (AttributeError, TypeError):
             return
 
         # We must check to see if the address is already in the
@@ -2785,9 +2785,8 @@ def on_action_EmailGatewayDialog(self):
         dialog = dialogs.EmailGatewayDialog(self, config=BMConfigParser())
         # For Modal dialogs
         dialog.exec_()
-        try:
-            acct = dialog.data
-        except AttributeError:
+        acct = dialog.data
+        if not acct:
             return
 
         # Only settings remain here

src/bitmessageqt/address_dialogs.py

@@ -94,7 +94,7 @@ class AddressDataDialog(QtWidgets.QDialog, AddressCheckMixin):
     def __init__(self, parent):
         super(AddressDataDialog, self).__init__(parent)
         self.parent = parent
-        self.data = ("", "")
+        self.data = None
 
     def accept(self):
         """Callback for QDialog accepting value"""
@@ -190,6 +190,7 @@ class NewSubscriptionDialog(AddressDataDialog, RetranslateMixin):
     def __init__(self, parent=None):
         super(NewSubscriptionDialog, self).__init__(parent)
         widgets.load('newsubscriptiondialog.ui', self)
+        self.recent = []
         self._setup()
 
     def _onSuccess(self, addressVersion, streamNumber, ripe):
@@ -313,6 +314,7 @@ def __init__(self, parent, config=None, account=None):
         widgets.load('emailgateway.ui', self)
         self.parent = parent
         self.config = config
+        self.data = None
         if account:
             self.acct = account
             self.setWindowTitle(_translate(