The compiling a sketch with the cli fails on windows with mbed cores (if there is a space in the path)

[umbynos]

Apparently if a user has a space in the username or even a path with a space in it the compile command fails with this error message:
The problem is present with mbed cores and seems not to be present on other cores.

[umbynos]

Fixed by @per1234 in arduino/ArduinoCore-mbed#363