[gnome-builder/wip/gtk4-port] libide/gui: fix path generation for settings

[Christian Hergert <chergert src gnome org>]

commit 16d41751f9fc9de19e9d9d9caeb5d2dc1597427e
Author: Christian Hergert <chergert redhat com>
Date:   Thu Mar 31 04:20:38 2022 -0700

    libide/gui: fix path generation for settings

 src/libide/gui/ide-preferences-window.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
---
diff --git a/src/libide/gui/ide-preferences-window.c b/src/libide/gui/ide-preferences-window.c
index 9f17ef724..73d654879 100644
--- a/src/libide/gui/ide-preferences-window.c
+++ b/src/libide/gui/ide-preferences-window.c
@@ -142,10 +142,13 @@ ide_preferences_window_get_settings (IdePreferencesWindow         *self,
           guint j = strlen (entry->path) - 1;
           char c;
 
-          path = g_malloc0 (strlen (entry->path) + strlen (subkey) + 1);
+          subkey++;
+
+          path = g_malloc0 (strlen (entry->path) + strlen (subkey) + 2);
           memcpy (path, entry->path, j);
           while ((c = *(subkey++)))
             path[j++] = c;
+          path[j++] = '/';
           path[j] = 0;
         }
     }