configure: fix VLC_COMPILE_BY/VLC_COMPILE_HOST empty by default
After 9e7ed024 the test for the environment variable wasn't done properly. Resulting in empty variables (and error messages during configure).
Fixes #26165 (closed)
After 9e7ed024 the test for the environment variable wasn't done properly. Resulting in empty variables (and error messages during configure).
Fixes #26165 (closed)
VideoLAN code repository instance