SbiRuntime::StepPUT, SbiRuntime::StepSET, SbiRuntime::StepVBASET call
checkUnoStructCopy eventually, which copies the UNO struct by value.
This is not what we need. On the other hand, SbiRuntime::StepPUTC only
makes the by-ref assignment, and makes the reference const; but Basic
code never assigns anything to the internal variable itself, only to
its members.
I hope that this time, I get it right.
Change-Id: I2b4a51a2dca9e7106e14e03360ef0d5a50b60079
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/173305
Tested-by: Jenkins
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>