lbfdisk fails to resize a partition even if it lies before freespace, when the partition are not present on disk in order

[rahul]

In util-linux libfdisk/src/partition.c
line:1082
     function recount_resize()

       the partition table that is passed on to the next function resize_get_last_possible()
       should be sorted in order based on their start sectors and not on their partition numbers.

       take this example:
       partition are present in this order on the disk:
          num start end size
           1 0 10 11
           4 11 21 10
           5 22 30 9
           2 31 40 10
    freespace 41 60 20

        in this case the resize of only partition number 2 to a size 25 will fail since the
        check will find the max size to be part of partition 2 since it finds no freespace
        between 2 and end of disk.
        Current check goes in order of partitions and will return once it finds that next partition
        after 2 is 4 and sets the max possible size for 2 as 10.

        To prevent this scenario before sending the partition table for the check it should be sorted
        according to the partition starts.