Add missing name in pkgutil.__all__
diff --git a/Lib/pkgutil.py b/Lib/pkgutil.py
index c50928f..322bbdf 100644
--- a/Lib/pkgutil.py
+++ b/Lib/pkgutil.py
@@ -11,7 +11,7 @@
 
 __all__ = [
     'get_importer', 'iter_importers', 'get_loader', 'find_loader',
-    'walk_packages', 'iter_modules',
+    'walk_packages', 'iter_modules', 'get_data',
     'ImpImporter', 'ImpLoader', 'read_code', 'extend_path',
 ]