Fix compilation matio 1 5 27

[S-Dafarra]

Fixes #81

[traversaro]

This works fine with older matio versions?

[S-Dafarra]

This works fine with older matio versions?

I tested it on my machine where I did not update and seemed to work fine. I suppose it should be safe since now it is "more restrictive". Worst case I can use auto

[S-Dafarra]

This works fine with older matio versions?

Actually the ci workflow tests it against the apt version which should be 1.5.21, while the conda version is 1.5.27

[traversaro]

This works fine with older matio versions?

Actually the ci workflow tests it against the apt version which should be 1.5.21, while the conda version is 1.5.27

Perfect!

[traversaro]

This works fine with older matio versions?

Actually the ci workflow tests it against the apt version which should be 1.5.21, while the conda version is 1.5.27

Perfect!

[S-Dafarra]

Thanks @traversaro

Merging