Fix an exception from commit 2161 (Prevent lua script restart when resetting a game). Fixed by making RecentFiles.GetRecentFileByPosition() more robust by not crashing when there is no recent file (returns "") instead

BizHawk.MultiClient/RecentFiles.cs

@@ -80,6 +80,8 @@ namespace BizHawk.MultiClient
 
 		public string GetRecentFileByPosition(int position)
 		{
+			if (recentlist.Count == 0) 
+				return "";
 			return recentlist[position];
 		}
 	}