Core/SmartAI:

- Improve an error msg in ProcessAction
- Allow dist/angle to be 0.0f and set default if negative when using SMART_ACTION_FOLLOW
- Some minor cleanup in Opcodes.cpp, all smsg's should have Handle_ServerSide

src/server/game/AI/SmartScripts/SmartScript.cpp

@@ -1925,7 +1925,7 @@ void SmartScript::ProcessAction(SmartScriptHolder& e, Unit* unit, uint32 var0, u
             break;
         }
         default:
-            sLog->outErrorDb("SmartScript::ProcessAction: Unhandled Action type %u", e.GetActionType());
+            sLog->outErrorDb("SmartScript::ProcessAction: Entry %d SourceType %u, Event %u, Unhandled Action type %u", e.entryOrGuid, e.GetScriptType(), e.event_id, e.GetActionType());
             break;
     }