[REVIEW 3-6, 3-6-0] fdo#50345 accept empty string as scalar numeric 0 argument

[Eike Rathke]

Hi,

Please review and cherry-pick to 3-6 and 3-6-0
http://cgit.freedesktop.org/libreoffice/core/commit/?id=a439cb5aba49d01df20f67a2c84b68542e4d3d5a
that resolves https://bugs.freedesktop.org/show_bug.cgi?id=50345
to accept empty string and strings containing only blanks as an argument
converted to numeric 0.

Thanks
  Eike

-- 
LibreOffice Calc developer. Number formatter stricken i18n transpositionizer.
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