Use /proc/self/mounts instead of /etc/mtab
These days /etc/mtab is just a symlink to /proc/self/mounts, so let's use /proc/self/mounts directly instead of /etc/mtab so pacman's CheckSpace options works in environments where /etc/mtab doesn't exist.
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These days /etc/mtab is just a symlink to /proc/self/mounts, so let's use /proc/self/mounts directly instead of /etc/mtab so pacman's CheckSpace options works in environments where /etc/mtab doesn't exist.