idbfsMountpoints broken after v0.93.0

[lukefullard]

Hello,
I may have missed something in the release notes - apologies if that is the case.
I am having issues when trying to set idbfsMountpoints in v0.93.0 onwards.

v0.92.0 works 100% fine:

v0283_v0.92.0.html

v0.93.0 raises issues:

v0283_v0.93.0.html

Console error is

console_error.log

Workaround for now is to use stlite v0.92.0
Please help :)