Dereference before null check

There may be a null pointer dereference, or else the comparison against null is unnecessary. All paths that lead to this null pointer comparison already dereference the pointer earlier
/src/conn/conn_layered.c:1125: REVERSE_INULL 175973 Directly dereferencing pointer "dir".
/src/conn/conn_layered.c:1159: REVERSE_INULL 175973 Null-checking "dir" suggests that it may be null, but it has already been dereferenced on all paths leading to the check.