Remove the inner border conditionals by narrowing the loop range
Remove the inner border conditionals by narrowing the loop range

Note that border is at least 1, so ix and jx can start with "border"
instead of "border+1".  The succeeding conditionals containing "curr[jx-1]"
and so forth will not trigger index out of range violations.

h2suzuki/fast_akaze,h2suzuki/fast_akaze