Always return a dictionary from get_spec

jtc42 · jtc42 · commit 8af573592efc · 2020-02-07T16:43:07.000Z
diff --git a/labthings/server/spec/utilities.py b/labthings/server/spec/utilities.py
@@ -12,12 +12,12 @@
 def update_spec(obj, spec):
     obj.__apispec__ = obj.__dict__.get("__apispec__", {})
     rupdate(obj.__apispec__, spec)
-    return obj.__apispec__
+    return obj.__apispec__ or {}
 
 
 def get_spec(obj):
     obj.__apispec__ = obj.__dict__.get("__apispec__", {})
-    return obj.__apispec__
+    return obj.__apispec__ or {}
 
 
 def convert_schema(schema, spec: APISpec):
