Fix restrict keyword compile error
Fixes an issue with older compilers and restrict keyword. See https://github.com/util-linux/util-linux/issues/1405. This should be resolved in 2.37.3 and 2.38 when it is released and this patch can be removed.
Resolves paraview-superbuild#207 (closed)
FYI: @ben.boeckel
Edited by chart3388