Adapt PyUNO getConstantByName to previous TypeDescriptionMgr API CHANGE

Change-Id: I5a91c6c6dce103a8e4daa1572a638e1968a48fd8
diff --git a/pyuno/source/module/pyuno_module.cxx b/pyuno/source/module/pyuno_module.cxx
index bd73c0b..1638aba 100644
--- a/pyuno/source/module/pyuno_module.cxx
+++ b/pyuno/source/module/pyuno_module.cxx
@@ -37,6 +37,7 @@
#include <uno/current_context.hxx>
#include <cppuhelper/bootstrap.hxx>

#include <com/sun/star/reflection/XConstantTypeDescription.hpp>
#include <com/sun/star/reflection/XIdlReflection.hpp>
#include <com/sun/star/reflection/XIdlClass.hpp>
#include <com/sun/star/registry/InvalidRegistryException.hpp>
@@ -477,18 +478,17 @@ static PyObject *getConstantByName(
        {
            OUString typeName ( OUString::createFromAscii( name ) );
            Runtime runtime;
            Any a = runtime.getImpl()->cargo->xTdMgr->getByHierarchicalName(typeName);
            if( a.getValueType().getTypeClass() ==
                com::sun::star::uno::TypeClass_INTERFACE )
            css::uno::Reference< css::reflection::XConstantTypeDescription > td;
            if (!(runtime.getImpl()->cargo->xTdMgr->getByHierarchicalName(
                      typeName)
                  >>= td))
            {
                // a idl constant cannot be an instance of an uno-object, thus
                // this cannot be a constant
                OUStringBuffer buf;
                buf.appendAscii( "pyuno.getConstantByName: " ).append( typeName );
                buf.appendAscii( "is not a constant" );
                throw RuntimeException(buf.makeStringAndClear(), Reference< XInterface > () );
            }
            PyRef constant = runtime.any2PyObject( a );
            PyRef constant = runtime.any2PyObject( td->getConstantValue() );
            ret = constant.getAcquired();
        }
    }