Fix handling of missing entries

Change-Id: Id2a7cc75c0ce54b489970b93e1a5815073b77fee
diff --git a/service.go b/service.go
index e1ac40d..3ed40e7 100644
--- a/service.go
+++ b/service.go
@@ -29,6 +29,7 @@
 
 		if err != nil {
 			c.String(http.StatusNotFound, "No entry found")
+			return nil
 		}
 
 		err = item.Value(func(v []byte) error {