[Debugger] Don't let the tableview try to figure out the widths of th…

…e columns

Since we are calculating the optimal widths, we don't need to let the table view resize everything.

main/src/addins/MonoDevelop.Debugger/MonoDevelop.Debugger/ObjectValue/Mac/MacObjectValueTreeView.cs

@@ -247,12 +247,12 @@ void OptimizeColumnSizes (bool emitResized = true)
 			bool changed = false;
 
 			if ((int) nameColumn.Width != (int) nameWidth) {
-				nameColumn.MinWidth = nameColumn.Width = nameWidth;
+				nameColumn.Width = nameWidth;
 				changed = true;
 			}
 
 			if ((int) valueColumn.Width != (int) valueWidth) {
-				valueColumn.MinWidth = valueColumn.Width = valueWidth;
+				valueColumn.Width = valueWidth;
 				changed = true;
 			}
 
@@ -267,8 +267,6 @@ void OptimizeColumnSizes (bool emitResized = true)
 
 				if (emitResized)
 					OnResized ();
-
-				SizeToFit ();
 			}
 
 			//ReloadData ();