error in checking to see if error output is a TextIOBase

Also removed a couple unused objects in a test

Author: zenmoto

splunklib/modularinput/event_writer.py

@@ -48,7 +48,7 @@ def __init__(self, output = sys.stdout, error = sys.stderr):
         else:
             self._out = TextIOWrapper(output)
 
-        if isinstance(output, TextIOBase):
+        if isinstance(error, TextIOBase):
             self._err = error
         else:
             self._err = TextIOWrapper(error)

tests/modularinput/test_event.py

@@ -144,9 +144,6 @@ def test_write_xml_is_sane(self):
         out = BytesIO()
         err = BytesIO()
 
-        outwrap = TextIOWrapper(out)
-        errwrap = TextIOWrapper(err)
-
         ew = EventWriter(out, err)
 
         expected_xml = ET.parse(data_open("data/event_maximal.xml")).getroot()