Dialogue: do not filter on disposition for creatures

apps/openmw/mwdialogue/filter.cpp

@@ -123,6 +123,11 @@ bool MWDialogue::Filter::testSelectStructs (const ESM::DialInfo& info) const
 
 bool MWDialogue::Filter::testDisposition (const ESM::DialInfo& info) const
 {
+    bool isCreature = (mActor.getTypeName() != typeid (ESM::NPC).name());
+
+    if (isCreature)
+        return true;
+
     int actorDisposition = MWBase::Environment::get().getMechanicsManager()->getDerivedDisposition(mActor);
 
     return actorDisposition >= info.mData.mDisposition;