Fix stasis walls not keeping dying GOL cells in stasis

src/simulation/Simulation.cpp

@@ -4715,12 +4715,15 @@ void Simulation::SimulateGoL()
 					}
 				}
 				else
+				{
+					if (!(bmap[ny/CELL][nx/CELL] == WL_STASIS && emap[ny/CELL][nx/CELL] < 8))
 					{
 						parts[ID(r)].tmp --;
 					}
 				}
 			}
 		}
+	}
 	for (int ny = CELL; ny < YRES-CELL; ny++)
 	{
 		//go through every particle again, but check neighbor map, then update particles