[vala] xcb: Set correct C name for Xcb.ScreenIterator.next

[Robert Ancell <rancell src gnome org>]

commit 8f142dd05864dd3bb116ff2ce839f41e9eaf6bfe
Author: Robert Ancell <robert ancell canonical com>
Date:   Wed May 14 09:16:47 2014 +1200

    xcb: Set correct C name for Xcb.ScreenIterator.next
    
    https://bugzilla.gnome.org/show_bug.cgi?id=730086

 vapi/xcb.vapi |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/vapi/xcb.vapi b/vapi/xcb.vapi
index 229e4d1..e66aa21 100644
--- a/vapi/xcb.vapi
+++ b/vapi/xcb.vapi
@@ -639,6 +639,7 @@ namespace Xcb {
                public unowned Screen data;
                public int rem;
                public int index;
+               [CCode (cname = "xcb_screen_next")]
                public static void next (ref ScreenIterator iter);
        }