Fix unsubscription.

9 years ago · f4011a9d32
1 changed files with 1 additions and 1 deletions
--- a/src/Markup/Avalonia.Markup/ControlLocator.cs
+++ b/src/Markup/Avalonia.Markup/ControlLocator.cs
@ -121,7 +121,7 @@ namespace Avalonia.Markup
            var detached = Observable.FromEventPattern<LogicalTreeAttachmentEventArgs>(
                x => relativeTo.DetachedFromLogicalTree += x,
-                x => relativeTo.DetachedFromLogicalTree += x)
+                x => relativeTo.DetachedFromLogicalTree -= x)
                .Select(x => false);
            return attached.Merge(detached).Select(isAttachedToLogicalTree =>