The fix for issue 131 "memory leaks issue in Mat_VarCalloc" does not seem effective

[lewyssmith]

Original github ref: #131
Doubt: https://bugs.mageia.org/show_bug.cgi?id=27969 (comment 4)
Note that the tester used a test file '006-memleak', and commented "gives the impression that the patch does not work. Upstream had difficulty verifying the fix or even the issue".
So there may be a misunderstanding somewhere - yet a segfault is a segfault, which should never happen.

[tbeu]

If you have a fix at hand feel free to create a new PR, too.

[tbeu]

I can not reproduce with 12b211c.