Crash test update

[Caolán McNamara]

On Sat, 2019-04-27 at 00:33 +0000, Crashtest VM wrote:
> New crashtest update available at 
> http://dev-builds.libreoffice.org/crashtest/0b56eb2c10ab4ca027f1a37e04519366b3cd7433/


soffice.bin --headless --convert-to xlsx ooo83250-1.ods
semi-reliably assert with null pDim at xepivotxml.cxx:504
I presume this started with b082998401e37e6c7534906601bc481423a6ded0
tdf#113908: Implement exporting pivot tables' groups fields to XSLX

--headless --convert-to pdf tdf89833-2.xlsm
semi-reliably fails stl concept checking "Error: attempt to compare a
dereferenceable iterator to a singular iterator"
I imagine this started with some part of the tdf#81765 fixes