[glib] registrybackend: avoid adding a new child when we return the root

[Ignacio Casal Quinteiro <icq src gnome org>]

commit 19fd89f8db75928038929f9ea6d918c5f5deb1a5
Author: Ignacio Casal Quinteiro <icq gnome org>
Date:   Fri Feb 5 12:05:02 2016 +0100

    registrybackend: avoid adding a new child when we return the root

 gio/gregistrysettingsbackend.c |   11 ++++++++---
 1 files changed, 8 insertions(+), 3 deletions(-)
---
diff --git a/gio/gregistrysettingsbackend.c b/gio/gregistrysettingsbackend.c
index 357b5de..de810dd 100644
--- a/gio/gregistrysettingsbackend.c
+++ b/gio/gregistrysettingsbackend.c
@@ -627,6 +627,13 @@ registry_cache_get_node_for_key (GNode       *root,
   /* Ignore preceding / */
   component = g_strdup (key_name);
   c = strchr (component, '/');
+
+  if (c == NULL)
+    {
+      g_free (component);
+      return root;
+    }
+
   if (c != NULL)
     *c = 0;
 
@@ -642,9 +649,7 @@ registry_cache_get_node_for_key (GNode       *root,
       trace ("get_node_for_key: New node for component '%s'\n", component);
     }
 
-  if (c == NULL)
-    result = root;
-  else if (*(c + 1) == 0)
+  if (*(c + 1) == 0)
     result = child;
   else if (child != NULL)
     result = registry_cache_get_node_for_key_recursive (child, c + 1,