Bug 1356: fix calls to evaluator::coeffRef(0,0) to get the address of the destination by adding a dstDataPtr() member to the kernel. This fixes undefined behavior if dst is empty (nullptr).
Bug 1356: fix calls to evaluator::coeffRef(0,0) to get the address of the destination
by adding a dstDataPtr() member to the kernel. This fixes undefined behavior if dst is empty (nullptr).

ritsu1228/eigen,pasuka/eigen,pasuka/eigen,ritsu1228/eigen,ritsu1228/eigen,pasuka/eigen,pasuka/eigen,pasuka/eigen,ritsu1228/eigen,ritsu1228/eigen