Fix validation of schemas without targetNamespace.
Fix validation of schemas without targetNamespace.


cezarfx/zorba,cezarfx/zorba,bgarrels/zorba,cezarfx/zorba,cezarfx/zorba,28msec/zorba,bgarrels/zorba,28msec/zorba,28msec/zorba,28msec/zorba,bgarrels/zorba,28msec/zorba,cezarfx/zorba,28msec/zorba,cezarfx/zorba,28msec/zorba,bgarrels/zorba,cezarfx/zorba,28msec/zorba,bgarrels/zorba,28msec/zorba,bgarrels/zorba,cezarfx/zorba,bgarrels/zorba,bgarrels/zorba,cezarfx/zorba,cezarfx/zorba