Merge "Fix bug that would prevent us from reserving right amount of space." into qt-dev

// Set the number of reserved filesystem blocks if needed.

static void tune_reserved_size(const std::string& blk_device, const FstabEntry& entry,

                               const struct ext4_super_block* sb, int* fs_stat) {

    if (entry.reserved_size != 0) {

    if (entry.reserved_size == 0) {

        return;

    }