add const when getting data from a JNI data wrapper

[wjxiz1992]

when calling from a .cu file which will be compiled by nvcc, the following error will be thrown:

/cudf-src/java/src/main/native/include/jni_utils.hpp(331): error: reinterpret_cast cannot cast away const or other type qualifiers

Add the const keyword to get rid of this error.

Signed-off-by: Allen Xu [email protected]

Co-authored-by: Jiaming Yuan [email protected]

[codecov]

Codecov Report

Merging #9637 (ec79e3a) into branch-21.12 (ab4bfaa) will decrease coverage by 0.12%.
The diff coverage is n/a.

❗ Current head ec79e3a differs from pull request most recent head 86d62c6. Consider uploading reports for the commit 86d62c6 to get more accurate results

@@               Coverage Diff                @@
##           branch-21.12    #9637      +/-   ##
================================================
- Coverage         10.79%   10.66%   -0.13%     
================================================
  Files               116      117       +1     
  Lines             18869    19829     +960     
================================================
+ Hits               2036     2115      +79     
- Misses            16833    17714     +881     

Impacted Files	Coverage Δ
python/dask_cudf/dask_cudf/sorting.py	92.90% <0.00%> (-1.21%)	⬇️
python/cudf/cudf/io/csv.py	0.00% <0.00%> (ø)
python/cudf/cudf/io/hdf.py	0.00% <0.00%> (ø)
python/cudf/cudf/io/orc.py	0.00% <0.00%> (ø)
python/cudf/cudf/__init__.py	0.00% <0.00%> (ø)
python/cudf/cudf/_version.py	0.00% <0.00%> (ø)
python/cudf/cudf/core/abc.py	0.00% <0.00%> (ø)
python/cudf/cudf/api/types.py	0.00% <0.00%> (ø)
python/cudf/cudf/io/dlpack.py	0.00% <0.00%> (ø)
python/cudf/cudf/core/frame.py	0.00% <0.00%> (ø)
... and 69 more

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[ttnghia]

Rerun tests.

[firestarman]

rerun tests

[jlowe]

@gpucibot merge