(#1585411) core: mount-setup: handle non-existing mountpoints gracefully #260
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Commit e792e89 ("path-util: don't eat up ENOENT in
path_is_mount_point()") changed path_is_mount_point() so it doesn't hide
-ENOENT from its caller. This causes all boots to fail early in case
any of the mount points does not exist (for instance, when kdbus isn't
loaded, /sys/fs/kdbus is missing).
Fix this by returning 0 from mount_one() if path_is_mount_point()
returned -ENOENT.
(cherry picked from commit b604cb9)
Resolves: #1585411