NullPointerException in add-user.sh if username and password equal in silent mode.

[darranl@localhost bin]$ ./add-user.sh -a --silent=true dddd dddd
Exception in thread "main" java.lang.NullPointerException
at org.jboss.as.domain.management.security.state.ErrorState.execute(ErrorState.java:61)
at org.jboss.as.domain.management.security.AddPropertiesUser.run(AddPropertiesUser.java:125)
at org.jboss.as.domain.management.security.AddPropertiesUser.main(AddPropertiesUser.java:169)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.jboss.modules.Module.run(Module.java:270)
at org.jboss.modules.Main.main(Main.java:294)
[darranl@localhost bin]$