settings: save parameters only when editing finished

Change-Id: Ieaeb2d40cff9cf34337aae634289004ba37d39f9
diff --git a/src/AccAdvancedRingVC.mm b/src/AccAdvancedRingVC.mm
index 9beedbc..b2efa4e 100644
--- a/src/AccAdvancedRingVC.mm
+++ b/src/AccAdvancedRingVC.mm
@@ -122,11 +122,9 @@
 
 #pragma mark - NSTextFieldDelegate methods
 
--(void)controlTextDidChange:(NSNotification *)notif
+-(void)controlTextDidEndEditing:(NSNotification *)notif
 {
     NSTextField *textField = [notif object];
-    NSRange test = [[textField currentEditor] selectedRange];
-
     [self valueDidChange:textField];
 }