Re: (ITS#6943) segfault in rwmmap in 2.4.25

[masarati@aero.polimi.it]

The bug is caused by the fact that "mapping" is always on, and slapo-rwm
checks whether there is anything it can/need to do about special
attributes, and it (incorrectly) assumed attributes have an equality rule.
 It has nothing to do with the fact that you defined no rules for search
or so.

The quick fix would be to check whether sat_equality is NULL; the
(possibly) long fix would be to entirely skip mapping when not needed.

p.