[gnome-builder] tree: fix incorrect return_if_fail

[Christian Hergert <chergert src gnome org>]

commit 5e1f3883173707f8cfc468c424caa6c7c1537c62
Author: Christian Hergert <chergert redhat com>
Date:   Tue Jun 1 12:48:04 2021 -0700

    tree: fix incorrect return_if_fail

 src/libide/tree/ide-tree.c | 2 --
 1 file changed, 2 deletions(-)
---
diff --git a/src/libide/tree/ide-tree.c b/src/libide/tree/ide-tree.c
index 8c2670235..5c1c4e66b 100644
--- a/src/libide/tree/ide-tree.c
+++ b/src/libide/tree/ide-tree.c
@@ -678,8 +678,6 @@ ide_tree_set_context_menu (IdeTree *self,
                         G_CALLBACK (gtk_widget_destroyed),
                         &priv->popover);
     }
-
-  g_return_if_fail (priv->popover == NULL);
 }
 
 void