Fix Fortran stub for PetscSFGetGraph() to support returning PETSC_NULL_INTEGER leaf array
Fix Fortran stub for PetscSFSetGraph() to support passing in PETSC_NULL_INTEGER leaf array
Commit-type: bug-fix \spend 30m Reported-by: yuanxi@advancesoft.jp
Fix Fortran stub for PetscSFSetGraph() to support passing in PETSC_NULL_INTEGER leaf array
Commit-type: bug-fix \spend 30m Reported-by: yuanxi@advancesoft.jp