Merge pull request #60 from JuliaGPU/ksh/checked

Fix import of checked macro

Author: kshyatt

src/libnccl.jl

@@ -8,8 +8,7 @@ using CEnum
 const NULL = C_NULL
 const INT_MIN = typemin(Cint)
 
-import CUDA.APIUtils: @checked
-import CUDA: CuPtr, CUstream
+import CUDA: @checked, CuPtr, CUstream
 
 function check(f)
     res = f()::ncclResult_t