[vala] glib-2.0: Fix some issues for the experimental non-null checks

[Luca Bruno <lucabru src gnome org>]

commit 07f51c304ffee8c3d28cdb09b260c2889f37424b
Author: Jacques-Pascal Deplaix <jp deplaix gmail com>
Date:   Mon Jun 20 19:28:13 2011 +0200

    glib-2.0: Fix some issues for the experimental non-null checks
    
    Fixes bug 651841.

 vapi/glib-2.0.vapi |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/vapi/glib-2.0.vapi b/vapi/glib-2.0.vapi
index 39274d3..def6bcc 100644
--- a/vapi/glib-2.0.vapi
+++ b/vapi/glib-2.0.vapi
@@ -1361,7 +1361,7 @@ public class string {
 		if (str == null) {
 			str_size = 0;
 		} else {
-			str_size = str.length;
+			str_size = ((!)(str)).length;
 		}
 
 		string* result = GLib.malloc0 (this.length - (end - start) + str_size + 1);
@@ -3096,12 +3096,12 @@ namespace GLib {
 				if (c == '\n') {
 					break;
 				}
-				ret.append_c ((char) c);
+				((!)(ret)).append_c ((char) c);
 			}
 			if (ret == null) {
 				return null;
 			} else {
-				return ret.str;
+				return ((!)(ret)).str;
 			}
 		}
 	}