config saving - do a try/catch instead of my attempt at checking read-only

BizHawk.Client.Common/config/ConfigService.cs

@@ -59,7 +59,7 @@ namespace BizHawk.Client.Common
 		public static void Save(string filepath, object config)
 		{
 			var file = new FileInfo(filepath);
-			if (file.Exists && !file.IsReadOnly)
+			try
 			{
 				using (var writer = file.CreateText())
 				{
@@ -67,6 +67,10 @@ namespace BizHawk.Client.Common
 					Serializer.Serialize(w, config);
 				}
 			}
+			catch
+			{
+				/* Eat it */
+			}
 		}
 
 		// movie 1.0 header stuff