The call to `GHOST_DisposeSystemPaths` was done in `WM_exit_ex` and
_some_ of the tests' 'teardown'. But some more where missing. Issue was
only reproducible when defining `WITH_CXX_GUARDEDALLOC` cmake option.
There are several layers of issues here, this commit addresses the
first, simplest one: since `BKE_appdir` API will indirectly create the
GHOST SystemPaths data, it is simpler and more logical to move the
deletion of this SystemPaths data in `BKE_appdir_exit()`. This avoids
exposing a fairly low-level implementation detail all over our codebase.
Further more, `WM_init` also does not need to explicitely call
`GHOST_CreateSystemPaths`, since it will be created automatically when
required.
01484ce5d2