macro doesn't work in async mode if autoescape is enabled

[mohd-akram]

Expected Behavior

The macro call should render correctly.

Actual Behavior

The macro call is rendered as a coroutine object repr (<coroutine object macro at 0x10ce50728>).

Python Code

import asyncio

from jinja2 import Template

loop = asyncio.get_event_loop()

async def main():
    print(await render())

async def render():
    t = Template('{% macro foo(x) %}{{ x }}{% endmacro %}{{ foo(42) }}',
                 enable_async=True, autoescape=True)
    return await t.render_async()

loop.run_until_complete(main())

Full Traceback

/Users/mohamed/.virtualenvs/item.tf/lib/python3.6/site-packages/jinja2/runtime.py:501: RuntimeWarning: coroutine 'macro' was never awaited
  rv = Markup(rv)

Your Environment

• Python version: 3.6
• Jinja version: 2.9.4