Releasing memory before the program terminates. (Was: patch: Make sort-test handle more then 100 lines, and avoid segfault)

[Petter Reinholdtsen]

[Ulrich Drepper]
> Just one thing: not freeing memory before it terminates is no memory
> leak.  It is usually stupid to do this since it unnecessarily slows
> down the program.

I partly agree, but prefer to always release the memory because one
never where the code will be used later.  It might end up in a
library, or as an example for unskilled programmers.  In this case, I
added the code to avoid warnings from valgrind.  Getting rid of this
noise made it easier to see real problems with the code.