Migrate fbcode/vision/fair/detectron2/projects/DensePose to per-tar…

…get checking

Reviewed By: rchen152

Differential Revision: D65570631

fbshipit-source-id: d41d1faa723e40c64d26f55dcb5d499940ce5eb0

projects/DensePose/densepose/modeling/roi_heads/roi_head.py

@@ -49,7 +49,10 @@ def __init__(self, cfg, input_shape: Dict[str, ShapeSpec], in_features):
         for in_feature in self.in_features:
             head_ops = []
             head_length = max(
-                1, int(np.log2(feature_strides[in_feature]) - np.log2(self.common_stride))
+                1,
+                # pyre-fixme[6]: For 1st argument expected `Union[bytes, complex,
+                #  float, int, generic, str]` but got `Optional[int]`.
+                int(np.log2(feature_strides[in_feature]) - np.log2(self.common_stride)),
             )
             for k in range(head_length):
                 conv = Conv2d(