Fix AuditLogEntry.target being None for invites

Fix #9336

discord/audit_logs.py

@@ -733,12 +733,11 @@ class AuditLogEntry(Hashable):
         if self.action.target_type is None:
             return None
 
-        if self._target_id is None:
-            return None
-
         try:
             converter = getattr(self, '_convert_target_' + self.action.target_type)
         except AttributeError:
+            if self._target_id is None:
+                return None
             return Object(id=self._target_id)
         else:
             return converter(self._target_id)
@@ -771,7 +770,12 @@ class AuditLogEntry(Hashable):
     def _convert_target_channel(self, target_id: int) -> Union[abc.GuildChannel, Object]:
         return self.guild.get_channel(target_id) or Object(id=target_id)
 
-    def _convert_target_user(self, target_id: int) -> Union[Member, User, Object]:
+    def _convert_target_user(self, target_id: Optional[int]) -> Optional[Union[Member, User, Object]]:
+        # For some reason the member_disconnect and member_move action types
+        # do not have a non-null target_id so safeguard against that
+        if target_id is None:
+            return None
+
         return self._get_member(target_id) or Object(id=target_id, type=Member)
 
     def _convert_target_role(self, target_id: int) -> Union[Role, Object]: