Tinderbox @71 now failing with undefined reference to `SvMemoryStream::remainingSize()´

[Luke Benes]

After https://cgit.freedesktop.org/libreoffice/core/commit/?id=b2cefc2e36925b4384eb0aea54aa2c6bcfb018a8
Most of the Linux tinderboxes went red.

This was fixed by https://cgit.freedesktop.org/libreoffice/core/commit/?id=49c87270f7176312806d1759967c247a312f0acf

But @71 is still to failing with:

https://tinderbox.libreoffice.org/cgi-bin/gunzip.cgi?tree=MASTER&brief-log=1539640808.27465

28887         /tinderbox/buildslave/build/workdir/CxxObject/emfio/source/reader/mtftools.o: In function `SvStream::TellEnd()´:
28888         /tinderbox/buildslave/source/libo-master/include/tools/stream.hxx:276: undefined reference to `SvMemoryStream::remainingSize()´