Fix #2079

Author: cowtowncoder

release-notes/VERSION-2.x

@@ -9,6 +9,8 @@ Project: jackson-databind
 #2060: `UnwrappingBeanPropertyWriter` incorrectly assumes the found serializer is
   of type `UnwrappingBeanSerializer`
  (reported by Petar T)
+#2079: NPE when visiting StaticListSerializerBase
+ (reported by WorldSEnder@github)
 #2082: `FactoryBasedEnumDeserializer` should be cachable
 #2096: `TreeTraversingParser` does not take base64 variant into account
  (reported by tangiel@github)

src/main/java/com/fasterxml/jackson/databind/ser/std/StaticListSerializerBase.java

@@ -110,7 +110,10 @@ public JsonNode getSchema(SerializerProvider provider, Type typeHint) {
 
     @Override
     public void acceptJsonFormatVisitor(JsonFormatVisitorWrapper visitor, JavaType typeHint) throws JsonMappingException {
-        acceptContentVisitor(visitor.expectArrayFormat(typeHint));
+        JsonArrayFormatVisitor v2 = visitor.expectArrayFormat(typeHint);
+        if (v2 != null) {
+            acceptContentVisitor(v2);
+        }
     }
 
     /*