[c++][fix] check nullable of bin mappers in dataset_loader.cpp (fix #5221) #5258
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shiyu1994
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jameslamb
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Jun 1, 2022
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This is to fix #5221. Nullable of
bin_mappers[i]should be checked. This is a bug introduced by PR #4448 amd was ignored by the fix #5145. Thanks @vollis for finding this out!