Update test/runtests.jl

Author: ChrisRackauckas

test/runtests.jl

@@ -5,7 +5,7 @@ using Test
     A = rand(5, 5)
     b = rand(5)
     prob = LinearProblem(A, b)
-    @test A * solve(deepcopy(prob), LUFactorization();alias_A = false, alias_b = false) ≈ b
+    @test A * solve(prob, LUFactorization();alias_A = false, alias_b = false) ≈ b
     @test A * solve(deepcopy(prob), QRFactorization();alias_A = false, alias_b = false) ≈ b
     @test A * solve(deepcopy(prob), SVDFactorization();alias_A = false, alias_b = false) ≈ b
 end