modified check_login function to return None instead of False to be able to have multiple plugins check_login

mediagoblin/auth/__init__.py

@@ -17,7 +17,10 @@ from mediagoblin.tools.pluginapi import hook_handle
 
 
 def check_login(user, password):
-    return hook_handle("auth_check_login", user, password)
+    result = hook_handle("auth_check_login", user, password)
+    if result:
+        return result
+    return False
 
 
 def get_user(*args):