Remove lint.

Author: Poikilos

openlcb/cdimemo.py

@@ -290,7 +290,7 @@ def addChildren(self) -> None:
         if self.element.tail:
             self.tail = self.element.tail
 
-        for child_elem in list(self.element):  # list() to avoid modification issues
+        for child_elem in list(self.element):  # list() fixes concurrency issue
             child_memo = CDIMemo(
                 tag=child_elem.tag,
                 element=child_elem,

openlcb/cdivar.py

@@ -181,6 +181,7 @@ def getSerializable(self):
         elif self.className == "string":
             return self.getString()
         assert self.className in ("blob", "eventid", "action")
+        assert self.data is not None, "CDIVar data not initialized"
         return base64.b64encode(self.data)
 
     def getDict(self, add_name=True):