Update old_replay_mode.cpp

gframe/old_replay_mode.cpp

@@ -221,6 +221,7 @@ namespace ygo {
 			char filename[256];
 			size_t slen = cur_replay.ReadInt16();
 			cur_replay.ReadData(filename, slen);
+			filename[slen] = 0;
 			if(!preload_script(pduel, filename, slen))
 				return false;
 		}