fix is already in WildFly, but if you want patch in 7.2.0 you can apply it yourself.
all you need to do is replace jboss-marshalling jar with newer version.
or you can take sources of 7.2.0 and build it like
mvn clean install -Dversion.org.jboss.marshalling.jboss-marshalling=<version you want> -DskipTests
That seems way too easy I'll give it a whirl.