Merge pull request #1192 from chrismeyersfsu/fix-stdout_handler_undefined

more gracefully account for undefined stdout

awx/main/tasks.py

@@ -993,6 +993,7 @@ class BaseTask(LogErrorsTask):
                     logger.exception('%s Exception occurred while running task', instance.log_format)
         finally:
             try:
+                if stdout_handle:
                     stdout_handle.flush()
                     stdout_handle.close()
                     event_ct = getattr(stdout_handle, '_event_ct', 0)