further test fix

Summary: test_viewpool was inactive so missed being fixed in D36547815 (https://github.com/facebookresearch/pytorch3d/commit/2d1c6d5d9382651bbf825f5f1677d576305d1f92)

Reviewed By: kjchalup

Differential Revision: D36625587

fbshipit-source-id: e7224eadfa5581fe61f10f67d2221071783de04a

tests/implicitron/test_forward_pass.py

@@ -163,6 +163,7 @@ class TestGenericModel(unittest.TestCase):
         device = torch.device("cuda:1")
         args = get_default_args(GenericModel)
         args.view_pooler_enabled = True
+        args.image_feature_extractor_class_type = "ResNetFeatureExtractor"
         args.image_feature_extractor_ResNetFeatureExtractor_args.add_masks = False
         model = GenericModel(**args)
         model.to(device)