Bug 5874

The generated client code produces a "example" argument list which contains an
array with the last item not initialized.  This causes an problem on the
server-side when one attempts to actually use them.  This is easy enough to
fix, but why should the schema even allow a "null" argument to be transmitted.

                        String [] arguments = new String [6];
                        arguments [0] = "-file";
                        arguments [1] = "{ipfile}";
                        arguments [2] = "-testparam";
                        arguments [3] = "value";
                        arguments [4] = "-testparam2";


<soapenv:Body>
    <LsRequest xmlns="http://helloworld.introduce.cagrid.org/HelloWorld">
        <arguments>-file</arguments> 
        <arguments>{ipfile}</arguments>
        <arguments>-testparam</arguments>
        <arguments>value</arguments>
        <arguments>-testparam2</arguments>
        <arguments xsi:nil="true"/>
</LsRequest>
</soapenv:Body>