atoi on AIX translates to 32bit integer value (when specifying memory size in bytes)

[jose1711]

https://github.com/julman99/eatmemory/blob/master/eatmemory.c#L85

Even if compiled with -maix64 size always contains 32bit integer which means one cannot allocate more than 2147483647 bytes. Replacing with atol solves the issue.

With atoi (original):

$ ./eatmemory 3000000000000000
Currently total memory: -4096
Currently avail memory: -4096
Eating 2147483647 bytes in chunks of 1024...

With atol (new):

$ eatmemory 3000000000000000
Currently total memory: -4096
Currently avail memory: -4096
Eating 3000000000000000 bytes in chunks of 1024...