Fixed minor formatting issue.

celery/backends/couchbase.py

@@ -12,9 +12,9 @@ from celery.exceptions import ImproperlyConfigured
 from .base import KeyValueStoreBackend
 
 try:
-    import couchbase_ffi # noqa
+    import couchbase_ffi  # noqa
 except ImportError:
-    pass # noqa
+    pass  # noqa
 try:
     from couchbase import Couchbase
     from couchbase.connection import Connection