ec2_instance - Fix NoneType error on no input tags

changelogs/fragments/856-ec2_instance-fix-nonetype-on-no-tags.yml

@@ -0,0 +1,2 @@
+bugfixes:
+  - ec2_instance - fix NoneType error when no tags are input (https://github.com/ansible-collections/amazon.aws/pull/856).

plugins/modules/ec2_instance.py

@@ -1780,17 +1780,16 @@ def determine_iam_role(name_or_arn):
 
 
 def handle_existing(existing_matches, state):
-    tags = dict(module.params.get('tags', None))
+    tags = dict(module.params.get('tags') or {})
     purge_tags = module.params.get('purge_tags')
     name = module.params.get('name')
 
     # Name is a tag rather than a direct parameter, we need to inject 'Name'
     # into tags, but since tags isn't explicitly passed we'll treat it not being
     # set as purge_tags == False
     if name:
-        if purge_tags and tags is None:
+        if purge_tags and not tags:
             purge_tags = False
-            tags = {}
         tags.update({'Name': name})
 
     changed = False