[gnome-ostree/wip/gjs-round2] prefix: Update for new main() execution

[Colin Walters <walters src gnome org>]

commit cc9046b7ac5f81940968c344bdf4965324e3b891
Author: Colin Walters <walters verbum org>
Date:   Fri Dec 14 16:47:27 2012 -0500

    prefix: Update for new main() execution

 src/ostbuild/js/prefix.js |   12 ++++++++----
 1 files changed, 8 insertions(+), 4 deletions(-)
---
diff --git a/src/ostbuild/js/prefix.js b/src/ostbuild/js/prefix.js
index e4eaf7f..f39358f 100644
--- a/src/ostbuild/js/prefix.js
+++ b/src/ostbuild/js/prefix.js
@@ -50,7 +50,11 @@ const Prefix = new Lang.Class({
     },
 });
 
-var prefix = new Prefix();
-GLib.idle_add(GLib.PRIORITY_DEFAULT,
-	      function() { try { prefix.execute(ARGV); } finally { loop.quit(); }; return false; });
-loop.run();
+function main(argv) {
+    let ecode = 1;
+    var app = new Prefix();
+    GLib.idle_add(GLib.PRIORITY_DEFAULT,
+		  function() { try { app.execute(argv); ecode = 0; } finally { loop.quit(); }; return false; });
+    loop.run();
+    return ecode;
+}