tree 57c4e31299cb5c48ec0ea17749aa7886d3672a83
parent d3e1d5044f23a2dc910f4253c3f4976bf08f93ab
author Behdad Esfahbod <behdad@behdad.org> 1557958466 -0700
committer Behdad Esfahbod <behdad@behdad.org> 1557958466 -0700

[iter] Simplify operator!= of iterator filters

Both to save ops, and also because lambdas don't implement operator!=,
so this was failing in range-based for loop if a lambda was passed to
hb_map() or hb_filter().  Just check end-condition assuming that we
are comparing to .end() or iterators that are otherwise derived from
current iterator.  Ie. don't compare things that are expected to be
in common.