Fix realloc size for nproc > PROCFS_ID_NUM
Fix realloc size for nproc > PROCFS_ID_NUM

When total number of existing process goes beyond numatop default
limit (PROCFS_ID_NUM), it re-allocates array, but with incorrect
size. Array contains pid which is considered as integer, so array
should be reallocated with   new_size * sizeof(int).

Signed-off-by: Ravi Bangoria <c3c2a342b6d0b20c2fffcb500dabb9f78ad28a56@linux.vnet.ibm.com>

intel/numatop,ColinIanKing/numatop,01org/numatop,01org/numatop,ColinIanKing/numatop,ColinIanKing/numatop,intel/numatop