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/query/planner_analysis.cpp:408: NULL_FIELD 175229 Reading field "filter", which is expected to possibly be "nullptr" in "origFetchNode->filter" (checked 39 out of 41 times).
/src/mongo/db/query/planner_analysis.cpp:409: NULL_FIELD 175229 Attempting to access the managed object of an empty smart pointer "origFetchNode->filter".