[gnome-tweak-tool] fix missing schema check

[John Stowers <jstowers src gnome org>]

commit 2e4ccde24c79ff803d3efa193b8eb113d1381b11
Author: John Stowers <john stowers gmail com>
Date:   Mon Jun 10 09:09:24 2013 +0200

    fix missing schema check

 gtweak/gsettings.py |    8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)
---
diff --git a/gtweak/gsettings.py b/gtweak/gsettings.py
index 67e9b89..a00fe19 100644
--- a/gtweak/gsettings.py
+++ b/gtweak/gsettings.py
@@ -113,10 +113,12 @@ class GSettingsFakeSetting:
 
 class GSettingsSetting(Gio.Settings):
     def __init__(self, schema_name, schema_dir=None, schema_path=None, **options):
+
         if schema_dir is None:
-            if schema_name not in _GSETTINGS_SCHEMAS and \
-               (schema_path is not None and \
-                schema_name not in _GSETTINGS_RELOCATABLE_SCHEMAS):
+            if schema_path is None and schema_name not in _GSETTINGS_SCHEMAS:
+                raise GSettingsMissingError(schema_name)
+
+            if schema_path is not None and schema_name not in _GSETTINGS_RELOCATABLE_SCHEMAS:
                 raise GSettingsMissingError(schema_name)
 
             if schema_path is None: