[glibmm] Gio::Action: Add exception specs to errthrow

[Kjell Ahlstedt <kjellahl src gnome org>]

commit abb93ba7861fa4e87fc2fb9d243c9fdb94a6f2d2
Author: Kjell Ahlstedt <kjellahlstedt gmail com>
Date:   Fri Sep 29 15:33:48 2017 +0200

    Gio::Action: Add exception specs to errthrow

 gio/src/action.hg |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gio/src/action.hg b/gio/src/action.hg
index 60f062b..5075846 100644
--- a/gio/src/action.hg
+++ b/gio/src/action.hg
@@ -177,7 +177,7 @@ public:
   static void parse_detailed_name(const Glib::ustring& detailed_name, Glib::ustring& action_name, T_Value& 
target_value);
 
   _WRAP_METHOD(static void parse_detailed_name_variant(const Glib::ustring& detailed_name,
-    Glib::ustring& action_name{>>}, Glib::VariantBase& target_value{>>}), g_action_parse_detailed_name, 
errthrow)
+    Glib::ustring& action_name{>>}, Glib::VariantBase& target_value{>>}), g_action_parse_detailed_name, 
errthrow "Glib::VariantParseError")
 
   /** Formats a detailed action name from the action's action_name and @a target_value.
    *