Fixes

- Qt six import was broken
- objectProcessor wasn't handling memoryview correctly

Author: PeterSurda

src/bitmessageqt/__init__.py

@@ -56,8 +56,7 @@
 import bitmessage_icons_rc  # noqa:F401 pylint: disable=unused-import
 import helper_sent
 
-from six.moves import iteritems, itervalues, range as xrange
-from six import text_type
+from six import iteritems, itervalues, text_type
 
 try:
     from plugins.plugin import get_plugin, get_plugins

src/class_objectProcessor.py

@@ -141,15 +141,19 @@ def checkackdata(data):
         # bypass nonce and time, retain object type/version/stream + body
         readPosition = 16
 
-        if data[readPosition:] in state.ackdataForWhichImWatching:
+        # data may be a memoryview, which is not hashable and thus
+        # cannot be used as a dictionary key; convert the slice to bytes.
+        ackcheckdata = bytes(data[readPosition:])
+
+        if ackcheckdata in state.ackdataForWhichImWatching:
             logger.info('This object is an acknowledgement bound for me.')
-            del state.ackdataForWhichImWatching[data[readPosition:]]
+            del state.ackdataForWhichImWatching[ackcheckdata]
             sqlExecute(
                 "UPDATE sent SET status='ackreceived', lastactiontime=?"
-                " WHERE ackdata=?", int(time.time()), data[readPosition:])
+                " WHERE ackdata=?", int(time.time()), ackcheckdata)
             queues.UISignalQueue.put((
                 'updateSentItemStatusByAckdata', (
-                    data[readPosition:],
+                    ackcheckdata,
                     _translate(
                         "MainWindow",
                         "Acknowledgement of the message received %1"