fix: correct listValues possibly being unbound

src/OnspringApiSdk/OnspringClient.py

@@ -485,11 +485,10 @@ class OnspringClient:
                 item = dict(item)
 
                 values = item.get('values')
+                listValues = []
 
                 if values != None:
 
-                    listValues = []
-
                     for value in values:
 
                             value = dict(value)