[patches] Fix broken patch for opm-grid
What this MR does / why does DuMux need it:
I added a broken patch in !3914 (merged). It now applies and fixes the relevant compilation error.
Edited by Timo Koch
What this MR does / why does DuMux need it:
I added a broken patch in !3914 (merged). It now applies and fixes the relevant compilation error.