NPE in org.apache.cxf.jaxws.support.JaxWsEndpointImpl.checkRespectBindingFeature

I'm getting a NPE when using a contract-first WS endpoint whose wsdl contains:

<wsp:PolicyReference URI="#ForceMTOM" wsdl:required="true" />

Caused by: java.lang.NullPointerException
at org.apache.cxf.jaxws.support.JaxWsEndpointImpl.checkRespectBindingFeature(JaxWsEndpointImpl.java:267)
at org.apache.cxf.jaxws.support.JaxWsEndpointImpl.extractWsdlExtensibilities(JaxWsEndpointImpl.java:227)
at org.apache.cxf.jaxws.support.JaxWsEndpointImpl.<init>(JaxWsEndpointImpl.java:205)
at org.apache.cxf.jaxws.support.JaxWsServiceFactoryBean.createEndpoint(JaxWsServiceFactoryBean.java:237)
at org.apache.cxf.service.factory.ReflectionServiceFactoryBean.createEndpoints(ReflectionServiceFactoryBean.java:351)
at org.apache.cxf.service.factory.ReflectionServiceFactoryBean.create(ReflectionServiceFactoryBean.java:283)
at org.apache.cxf.jaxws.support.JaxWsServiceFactoryBean.create(JaxWsServiceFactoryBean.java:204)
at org.apache.cxf.frontend.AbstractWSDLBasedEndpointFactory.createEndpoint(AbstractWSDLBasedEndpointFactory.java:102)
at org.apache.cxf.frontend.ServerFactoryBean.create(ServerFactoryBean.java:159)
at org.apache.cxf.jaxws.JaxWsServerFactoryBean.create(JaxWsServerFactoryBean.java:211)
at org.apache.cxf.jaxws.EndpointImpl.getServer(EndpointImpl.java:456)
at org.apache.cxf.jaxws.EndpointImpl.doPublish(EndpointImpl.java:334)
... 13 more

This looks related to the changes in CXF-4876.