user.get('moo') -> user.moo

User fields are always existent, so there is no need to .get() them,
just use them directly.

Signed-off-by: Sebastian Spaeth <Sebastian@SSpaeth.de>

mediagoblin/submit/views.py

@@ -41,7 +41,7 @@ def submit_start(request):
     First view for submitting a file.
     """
     submit_form = submit_forms.SubmitStartForm(request.form,
-        license=request.user.get('license_preference'))
+        license=request.user.license_preference)
 
     if request.method == 'POST' and submit_form.validate():
         if not ('file' in request.files