[glib] GSimpleAction: fix mistake in last commit

[Ryan Lortie <desrt src gnome org>]

commit 9e81c07ad6b02c073c9cc7bf0a1288b884ec8741
Author: Ryan Lortie <desrt desrt ca>
Date:   Sat Jan 18 14:27:26 2014 -0500

    GSimpleAction: fix mistake in last commit
    
    Some bad copy-paste happening here...

 gio/gsimpleaction.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gio/gsimpleaction.c b/gio/gsimpleaction.c
index 819f50b..adf81f6 100644
--- a/gio/gsimpleaction.c
+++ b/gio/gsimpleaction.c
@@ -210,7 +210,7 @@ g_simple_action_activate (GAction  *action,
        * for handling activation.
        */
       if (g_signal_has_handler_pending (action, g_simple_action_signals[SIGNAL_ACTIVATE], 0, TRUE))
-        g_signal_emit (action, g_simple_action_signals[SIGNAL_CHANGE_STATE], 0, parameter);
+        g_signal_emit (action, g_simple_action_signals[SIGNAL_ACTIVATE], 0, parameter);
 
       /* If not, do some reasonable defaults for stateful actions. */
       else if (simple->state)