Fix types of Fortran array elements

Fortran array elements made default integer in OMP_GET_PLACE_PROC_IDS and
OMP_GET_PARTITION_PLACE_NUMS subroutines, otherwise call to them produces
incorrect result.

Patch by Olga Malysheva

Differential Revision: https://reviews.llvm.org/D40356

llvm-svn: 319372