tests: Fix quteproc.after_test() fixture.

It accidentally was named wrong, which caused it to never be executed. That
means the teardown log wasn't actually checked for errors.

tests/integration/conftest.py

@@ -22,4 +22,4 @@
 """Things needed for integration testing."""
 
 from webserver import httpbin, httpbin_after_test
-from quteprocess import quteproc
+from quteprocess import quteproc, quteproc_after_test

tests/integration/quteprocess.py

@@ -238,7 +238,7 @@ def quteproc(qapp, httpbin):
 
 
 @pytest.yield_fixture(autouse=True)
-def httpbin_after_test(quteproc):
+def quteproc_after_test(quteproc):
     """Fixture to run cleanup tasks after each test."""
     yield
     quteproc.after_test()