Fix #3094: do the correct cast for the right integer size.

This commit was SVN r26439.

ompi/mpi/fortran/mpif-h/file_get_position_f.c

@@ -74,6 +74,6 @@ void ompi_file_get_position_f(MPI_Fint *fh, MPI_Offset *offset, MPI_Fint *ierr)
     if (NULL != ierr) *ierr = OMPI_INT_2_FINT(c_ierr);
 
     if (MPI_SUCCESS == c_ierr) {
-        *offset = (MPI_Fint) c_offset;
+        *offset = (MPI_Offset) c_offset;
     }
 }

ompi/mpi/fortran/mpif-h/file_get_size_f.c

@@ -74,6 +74,6 @@ void ompi_file_get_size_f(MPI_Fint *fh, MPI_Offset *size, MPI_Fint *ierr)
     if (NULL != ierr) *ierr = OMPI_INT_2_FINT(c_ierr);
 
     if (MPI_SUCCESS == c_ierr) {
-        *size = (MPI_Fint) c_size;
+        *size = (MPI_Offset) c_size;
     }
 }

ompi/mpi/fortran/mpif-h/file_get_view_f.c

@@ -81,7 +81,7 @@ void ompi_file_get_view_f(MPI_Fint *fh, MPI_Offset *disp,
     if (NULL != ierr) *ierr = OMPI_INT_2_FINT(c_ierr);
 
     if (MPI_SUCCESS == c_ierr) {
-        *disp = (MPI_Fint) c_disp;
+        *disp = (MPI_Offset) c_disp;
         *etype = MPI_Type_c2f(c_etype);
         *filetype = MPI_Type_c2f(c_filetype);
         ompi_fortran_string_c2f(c_datarep, datarep, datarep_len);