What does this MR do and why?
Oj v3.13.16 introduced a new feature to obtain the line number and column in the Simple API JSON (SAJ) parser (https://github.com/ohler55/oj/pull/785), but there was a pointer type error that caused a seg fault for certain inputs. The bug was fixed in https://github.com/ohler55/oj/pull/799.
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