Division or modulo by float zero

This could cause an immediate crash or incorrect computation. An expression which may be zero is used as a divisor in floating-point arithmetic.
/src/mongo/db/storage/collection_markers.cpp:466: DIVIDE_BY_ZERO 135206 Checking "numRecords == 0LL" implies that "numRecords" is 0 on the true branch.
/src/mongo/db/storage/collection_markers.cpp:487: DIVIDE_BY_ZERO 135206 In expression "(double)dataSize / (double)numRecords", division by expression "numRecords" which may be zero has undefined behavior.