feat: replacing redundant genv()

[neesaaa]

completing on pr #2826
fixes #2836

[neesaaa]

i dont know how but my build skipped some syntax errors and build 100% correctly at first , i handled it in the 2nd commit

[ice0]

Hi!

There are two issues in this PR:
1)

std::string localdir = Glib::getenv("LOCALAPPDATA");

This environment variable (and some others) is required for correct work. They are not for debugging purposes, so no need to change them.

std::string localdir = Glib::DEBUG_GETENV("LOCALAPPDATA");

This will not work if you undefine LOGGING_ENABLED.

[neesaaa]

hi @ice0
okay so every env variable required by the program i have to leave it as it was getenv()

[neesaaa]

if u want changes to be in a new pr to see changes better no problem .