[REVIEW 3-6 3-6-4] fix for fdo#57451, don't throw exception through methods with throw()

[Markus Mohrhard]

Hey,

[1] and [2] fix a crash in calc import that happens if the sax parser
is throwing an exception when reading the document properties.

The problem is that the methods are marked nothrow with throw().

Regards,
Markus

[1] http://cgit.freedesktop.org/libreoffice/core/commit/?id=c54534415dd71afffaff929617a4ddfcd599b152
[2] http://cgit.freedesktop.org/libreoffice/core/commit/?id=144a8586b8a3cc16a00807f5968886e73c44c0d9

[bug] https://bugs.freedesktop.org/show_bug.cgi?id=57451