Bug#1128813: getfem: fails to build against SuperLU

[Konstantinos Poulios]

I have now tested it and could reproduce the issue.

Just ignore my previous message.

The following patch should work:
https://cgit.git.savannah.nongnu.org/cgit/getfem.git/commit/?id=bdf8abc34b7a06fb798b66dbcf909db8228a6bb2