[libdazzle] multi-paned: clean up moving by index

[Christian Hergert <chergert src gnome org>]

commit 75dddc20f618de84a17029e612276bacdb719753
Author: Christian Hergert <chergert redhat com>
Date:   Thu Jun 22 00:42:36 2017 -0700

    multi-paned: clean up moving by index

 src/widgets/dzl-multi-paned.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/src/widgets/dzl-multi-paned.c b/src/widgets/dzl-multi-paned.c
index 6bd3802..f6791d4 100644
--- a/src/widgets/dzl-multi-paned.c
+++ b/src/widgets/dzl-multi-paned.c
@@ -483,7 +483,12 @@ dzl_multi_paned_set_child_index (DzlMultiPaned *self,
 
       if (ele->widget == widget)
         {
-          DzlMultiPanedChild copy = *ele;
+          DzlMultiPanedChild copy = { 0 };
+
+          copy.widget = ele->widget;
+          copy.handle = ele->handle;
+          copy.position = -1;
+          copy.position_set = FALSE;
 
           g_array_remove_index (priv->children, i);
           g_array_insert_val (priv->children, index, copy);