fix test fail when define LUABIND_NO_EXCEPTIONS

[lipeiyuan]

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When define LUABIND_NO_EXCEPTIONS,luabind::error will not be defined,so the test will fail.In principle, the test should be rewritten, but it seems that it can be modified easily.

[Oberon00]

These tests do expect luabind::error to be thrown and should not be changed (maybe they need some ifdefs though). It is worrying that they succeed with LUABIND_NO_EXCEPTIONS defined.

[lipeiyuan]

These tests do expect luabind::error to be thrown and should not be changed (maybe they need some ifdefs though). It is worrying that they succeed with LUABIND_NO_EXCEPTIONS defined.

yes, it needs some #ifdefine here