Don't play "idle" voice entries for NPCs with Hello 0

Not entirely sure if this is correct, but it prevents the NPCs in the starting boat from incorrectly playing them.

apps/openmw/mwmechanics/aiwander.cpp

@@ -191,10 +191,12 @@ namespace MWMechanics
                 mIdleNow = true;
 
                 // Play idle voiced dialogue entries randomly
+                int hello = actor.getClass().getCreatureStats(actor).getAiSetting(CreatureStats::AI_Hello).getModified();
+                if (hello > 0)
+                {
                     const MWWorld::ESMStore &store = MWBase::Environment::get().getWorld()->getStore();
                     float chance = store.get<ESM::GameSetting>().find("fVoiceIdleOdds")->getFloat();
                     int roll = std::rand()/ (static_cast<double> (RAND_MAX) + 1) * 100; // [0, 99]
-
                     MWWorld::Ptr player = MWBase::Environment::get().getWorld()->getPlayerPtr();
 
                     // Don't bother if the player is out of hearing range
@@ -202,13 +204,14 @@ namespace MWMechanics
                         MWBase::Environment::get().getDialogueManager()->say(actor, "idle");
                 }
             }
+        }
 
         if(mIdleNow)
         {
             // Play a random voice greeting if the player gets too close
             const MWWorld::ESMStore &store = MWBase::Environment::get().getWorld()->getStore();
 
-            float hello = actor.getClass().getCreatureStats(actor).getAiSetting(CreatureStats::AI_Hello).getModified();
+            int hello = actor.getClass().getCreatureStats(actor).getAiSetting(CreatureStats::AI_Hello).getModified();
             float helloDistance = hello;
             int iGreetDistanceMultiplier = store.get<ESM::GameSetting>().find("iGreetDistanceMultiplier")->getInt();
             helloDistance *= iGreetDistanceMultiplier;