Fix wrong variable name in indmax/min tests

Author: Seelengrab

test/reduce.jl

@@ -426,7 +426,7 @@ end
     @test indmin(cos, 0:π/2:2π) == 3
     @test indmin(identity, [1, 2, 3, missing]) === 4
 
-    prod_test = collect(Iterators.product(1:5, 1:5))
+    prodtest = collect(Iterators.product(1:5, 1:5))
     @test indmin(sum, prodtest) == CartesianIndex(1, 1)
     @test indmin(identity, prodtest) == indmin(prodtest)
     @test indmin(identity, prodtest) == CartesianIndex(1, 1)
@@ -437,7 +437,7 @@ end
     @test indmax(cos, 0:π/2:2π) == 1
     @test indmax(identity, [1, 2, 3, missing]) == 4
 
-    prod_test = collect(Iterators.product(1:5, 1:5))
+    prodtest = collect(Iterators.product(1:5, 1:5))
     @test indmax(sum, prodtest) == CartesianIndex(5, 5)
     @test indmax(identity, prodtest) == indmax(prodtest)
     @test indmax(identity, prodtest) == CartesianIndex(5, 5)