Problem:
If NVIM_LOG_FILE, or the default fallback, is inaccessible (e.g.
directory is owned by root), users get confused.
Solution:
Show a warning when $NVIM_LOG_FILE or $XDG_STATE_HOME are inaccessible.
Also fix a latent memory leak: `os_mkdir_recurse` returns a uv error
code (int), but it was stored as `bool`, causing `os_strerror` to
receive an invalid error code and leak memory.
See: https://docs.libuv.org/en/v1.x/errors.html#c.uv_strerror
Co-authored-by: Sean Dewar <6256228+seandewar@users.noreply.github.com>
Co-authored-by: Justin M. Keyes <justinkz@gmail.com>
anondeveg