where used directly, since rtl_allocateMemory now just calls into std::malloc

Change-Id: I59f85bdb7efdf6baa30e8fcd2370c0f8e9c999ad
Reviewed-on: https://gerrit.libreoffice.org/59685
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>