FindMatlab: Older versions without VersionInfo.xml not considered
The helper function matlab_extract_all_installed_versions_from_registry
does not add found versions if they do not provide a VersionInfo.xml
. (Version 2013b (9.9) in my case)
This bug is interesting because of how it interferes with #25585 (closed):
Because _Matlab_VersionInfoXML
does not set _matlab_version_tmp
correctly in that case, that variable is not "unknown".
The empty version gets 'added' to the resulting list anyway.