Dereference of potentially null field

If the field is actually null, then a null pointer dereference will occur. Field, which is statistically checked against null, is dereferenced.
/src/mongo/db/exec/sbe/stages/scan.cpp:1095: NULL_FIELD 175077 Reading field "_cursor", which is expected to possibly be "nullptr" in "this->_cursor" (checked 6 out of 7 times).
/src/mongo/db/exec/sbe/stages/scan.cpp:1095: NULL_FIELD 175077 Attempting to access the managed object of an empty smart pointer "this->_cursor".