avoid issues with zero-length routines

Author: Try

game/world/objects/npc.cpp

@@ -3091,6 +3091,7 @@ gtime Npc::endTime(const Npc::Routine &r) const {
   auto wtime = owner.time();
   auto time  = wtime.timeInDay();
 
+  //NOTE: should we consider time extension for invalid routine sequences?
   if(r.end<r.start) {
     if(time<r.end)
       return gtime(wtime.day(),r.end.hour(),r.end.minute());
@@ -3101,6 +3102,10 @@ gtime Npc::endTime(const Npc::Routine &r) const {
       return gtime(wtime.day()+1,r.end.hour(),r.end.minute()); else
       return gtime(wtime.day(),r.end.hour(),r.end.minute());
     }
+  if(r.start==r.end && r.end.toInt()==0) {
+    // for example Rtn_Start_1081 in NTR is filled with zeros
+    return gtime(wtime.day()+1,r.end.hour(),r.end.minute());
+    }
   // error - routine is not active now
   return wtime;
   }

game/world/world.cpp

@@ -1015,7 +1015,7 @@ WayPath World::wayTo(const Npc &npc, const WayPoint &end) const {
   return wmatrix->wayTo(wpoint.data(),wpoint.size(),p,end);
   }
 
-GameScript &World::script() const {
+GameScript& World::script() const {
   return *game.script();
   }