find_nvidia_headers.py cccl IS_WINDOWS: fall-through after checking for conda anomaly, to restore proper functioning for standard CTK installations

Author: rwgk

cuda_pathfinder/cuda/pathfinder/_headers/find_nvidia_headers.py

@@ -39,13 +39,13 @@ def _find_based_on_ctk_layout(libname: str, h_basename: str, anchor_point: str)
     idir = os.path.join(*parts)
     if libname == "cccl":
         if IS_WINDOWS:
+            # conda has this anomaly
             cdir_ctk12 = os.path.join(idir, "targets", "x64")
             cdir_ctk13 = os.path.join(cdir_ctk12, "cccl")
             if _joined_isfile(cdir_ctk13, h_basename):
                 return cdir_ctk13
             if _joined_isfile(cdir_ctk12, h_basename):
                 return cdir_ctk12
-            return None
         cdir = os.path.join(idir, "cccl")  # CTK 13
         if _joined_isfile(cdir, h_basename):
             return cdir