[gnome-builder] prefs: remove dead code

[Christian Hergert <chergert src gnome org>]

commit ad14f986c4c8db98ba0f1f4bc4399a029741ae9c
Author: Christian Hergert <christian hergert me>
Date:   Mon Apr 18 19:12:12 2016 -0700

    prefs: remove dead code

 libide/preferences/ide-preferences-bin.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/libide/preferences/ide-preferences-bin.c b/libide/preferences/ide-preferences-bin.c
index 37555f1..dbfc1c4 100644
--- a/libide/preferences/ide-preferences-bin.c
+++ b/libide/preferences/ide-preferences-bin.c
@@ -138,7 +138,7 @@ ide_preferences_bin_get_settings (IdePreferencesBin *self)
         return NULL;
 
       hash_key = g_strdup_printf ("%s|%s",
-                                  resolved_schema_id ?: "",
+                                  resolved_schema_id,
                                   resolved_path ?: "");
 
       if (!g_hash_table_contains (settings_cache, hash_key))