Coverity analysis defect 121104: Dereference after null check

Dereference after null check

Either the check against null is unnecessary, or there may be a null pointer dereference. Pointer is checked against null but then dereferenced anyway
/test/format/snap.c:694: FORWARD_NULL 121104 Comparing "session" to null implies that "session" might be null.
/test/format/snap.c:695: FORWARD_NULL 121104 Dereferencing null pointer "session".