[extensions-web] extensions: If we try to download an incompatible extension, 404

[Jasper St. Pierre <jstpierre src gnome org>]

commit 2442605851d8e548345d6b89302d7a79a94aff0f
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Wed May 2 17:22:20 2012 -0400

    extensions: If we try to download an incompatible extension, 404
    
    ... instead of 500-ing

 sweettooth/extensions/views.py |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/sweettooth/extensions/views.py b/sweettooth/extensions/views.py
index 4c8ce2a..64b7e2c 100644
--- a/sweettooth/extensions/views.py
+++ b/sweettooth/extensions/views.py
@@ -74,6 +74,9 @@ def shell_download(request, uuid):
     extension = get_object_or_404(models.Extension.objects.visible(), uuid=uuid)
     version = find_extension_version_from_params(extension, request.GET)
 
+    if version is None:
+        raise Http404()
+
     extension.downloads += 1
     extension.save(replace_metadata_json=False)