free -b alignment issues

[Hadrien Lacour]

Hello,

after switching to busybox awk because mawk had a bug, I discovered a bug in
free:

> free -b
              total        used        free      shared  buff/cache   available
Mem:    16812838912  1123995648 13094776832   157700096  2594066432 15411052544
Swap:             0           0           0

> busybox free -b
             total       used       free     shared    buffers     cached
Mem:   16812838912 372266598413090172928  157700096    2211840 2493845504
-/+ buffers/cache: 122660864015586230272
Swap:            0          0          0


As you can see, the 3rd and 4th fields are merge. It looks like the other free
(from the procps package) uses 12 columns instead of 11.