Fix stasis walls not keeping dying GOL cells in stasis

src/simulation/Simulation.cpp

@@ -4716,7 +4716,10 @@ void Simulation::SimulateGoL()
 				}
 				else
 				{
-					parts[ID(r)].tmp --;
+					if (!(bmap[ny/CELL][nx/CELL] == WL_STASIS && emap[ny/CELL][nx/CELL] < 8))
+					{
+						parts[ID(r)].tmp --;
+					}
 				}
 			}
 		}