databases/pgrouting: fix build on 32-bits

/wrkdirs/usr/ports/databases/pgrouting/work/pgrouting-3.6.0/src/cpp_common/get_check_data.cpp:365:12: error: no matching function for call to 'get_array'

return get_array(pg_array, the_size, true);
       ^~~~~~~~~

/wrkdirs/usr/ports/databases/pgrouting/work/pgrouting-3.6.0/src/cpp_common/get_check_data.cpp:265:1: note: candidate function not viable: no known conversion from 'uint64_t *' (aka 'unsigned long long *') to 'size_t *' (aka 'unsigned int *') for 2nd argument
get_array(ArrayType *v, size_t *arrlen, bool allow_empty) {
^
1 error generated.