Ram Watch - Fix UpdateValues() so that it only changes the text of the value sub item of each item in the ListView object rather than rebuilding the entire object, should be faster this way

BizHawk.MultiClient/tools/RamWatch.cs

@@ -39,9 +39,9 @@ namespace BizHawk.MultiClient
             {
                 if (watchList[x].type == atype.SEPARATOR) continue;
                 watchList[x].value = Global.Emulator.MainMemory.PeekByte(watchList[x].address);
+                WatchListView.Items[x].SubItems[1].Text = watchList[x].value.ToString();
                 //TODO: readbytes based on type, size, endian values
-            }
-            DisplayWatchList();            
+            }          
         }
 
         public RamWatch()