Fix typo.

Author: chriselrod

src/lowering.jl

@@ -544,7 +544,7 @@ function add_upper_outer_reductions(ls::LoopSet, loopq::Expr, Ulow::Int, Uhigh::
             Expr(:call, lv(:scalar_less), Expr(:call, lv(:vsub), unrolledloop.stopsym, unrolledloop.starthint-1), loopbuffer)
         end
     elseif unrolledloop.stopexact
-        Expr(:call, lv(:scalar_less), Expr(:call, lv(:vsub), unrolledloop.stophint+1, unrolledloop.sartsym), loopbuffer)
+        Expr(:call, lv(:scalar_less), Expr(:call, lv(:vsub), unrolledloop.stophint+1, unrolledloop.startsym), loopbuffer)
     else# both are given by symbols
         Expr(:call, lv(:scalar_less), Expr(:call, lv(:vsub), unrolledloop.stopsym, Expr(:call,lv(:vsub),unrolledloop.startsym, staticexpr(1))), loopbuffer)
     end