[Interop] Invalid URI in MessageTest-1G/SOAPService.wsdl

Woden reports a URISyntaxException when parsing this WSDL:

Woden[Error],0:0,WSDL506,Could not create a URI from the string
"?op=EchoInt;int={int};".,java.net.URISyntaxException:Illegal character in
query at index 16: ?op=EchoInt;int={int};

Woden is using the constructor of the class java.net.URI with the argument
"?op=EchoInt;int={int};". The left curly brace is the problem.

The relevant operation is:

    <operation ref="tns:EchoInt"
      wsoap:action="http://example.org/message-test/action/EchoInt"
      whttp:location="?op=EchoInt;int={int};">