Do not swallow return_value (#44)

* Do not swallow return_value

* Add this PR to CHANGELOG

Author: nelz9999

CHANGELOG.rst

@@ -9,6 +9,7 @@ unreleased
 * bugfix: SQLAlcemy plugin would cause warning messages with some db connection strings that contained invalid characters for a segment/subsegment name.
 * bugfix: Aiohttp middleware serialized URL values incorrectly. `PR37 <https://github.com/aws/aws-xray-sdk-python/pull/37>`_
 * bugfix: Don't overwrite plugins list on each `.configure` call. `PR38 <https://github.com/aws/aws-xray-sdk-python/pull/38>`_
+* bugfix: Do not swallow `return_value`. `PR44 <https://github.com/aws/aws-xray-sdk-python/pull/44>`_
 
 0.96
 ====

aws_xray_sdk/core/recorder.py

@@ -336,7 +336,7 @@ def record_subsegment(self, wrapped, instance, args, kwargs, name,
         finally:
             # No-op if subsegment is `None` due to `LOG_ERROR`.
             if subsegment is None:
-                return
+                return return_value
 
             end_time = time.time()
             if callable(meta_processor):

tests/ext/botocore/test_botocore.py

@@ -122,6 +122,7 @@ def test_pass_through_on_context_missing():
 
     with Stubber(ddb) as stubber:
         stubber.add_response('describe_table', response, {'TableName': 'mytable'})
-        ddb.describe_table(TableName='mytable')
+        result = ddb.describe_table(TableName='mytable')
+        assert result is not None
 
     xray_recorder.configure(context_missing='RUNTIME_ERROR')